diff --git a/ch09-writing-your-own-methods/ask.rb b/ch09-writing-your-own-methods/ask.rb
index 01716eb35..942b8ad91 100644
--- a/ch09-writing-your-own-methods/ask.rb
+++ b/ch09-writing-your-own-methods/ask.rb
@@ -1,3 +1,29 @@
 def ask question
-  # your code here
-end
\ No newline at end of file
+  while true
+    puts question
+    reply = gets.chomp.downcase
+    if (reply == 'yes' || reply == 'no')
+      if reply == 'yes'
+        return true
+      else
+        return false
+      end
+    else
+        puts 'Please answer "yes" or "no".'
+    end
+  end
+end
+
+  puts 'Hello, and thank you for...'
+  puts
+  ask 'Do you like eating tacos?'
+  wets_bed = ask 'Do you wet the bed?'
+  ask 'Do you like eating sopapillas?'
+  puts 'Just a few more questions...'
+  ask 'Do you like drinking horchata?'
+  ask 'Do you like eating flautas?'
+  puts
+  puts 'DEBRIEFING:'
+  puts 'Thank you for...'
+  puts
+  puts wets_bed
diff --git a/ch09-writing-your-own-methods/old_school_roman_numerals.rb b/ch09-writing-your-own-methods/old_school_roman_numerals.rb
index ca6589f2d..dbbd4574a 100644
--- a/ch09-writing-your-own-methods/old_school_roman_numerals.rb
+++ b/ch09-writing-your-own-methods/old_school_roman_numerals.rb
@@ -1,3 +1,12 @@
 def old_roman_numeral num
-  # your code here
-end
\ No newline at end of file
+  roman_numeral = ""
+  roman_numeral = roman_numeral + "M" * (num / 1000)
+  roman_numeral = roman_numeral + "D" * (num % 1000 / 500)
+  roman_numeral = roman_numeral + "C" * (num % 500 / 100)
+  roman_numeral = roman_numeral + "L" * (num % 100 /50)
+  roman_numeral = roman_numeral + "X" * (num % 50 / 10)
+  roman_numeral = roman_numeral + "V" * (num % 10 / 5)
+  roman_numeral = roman_numeral + "I" * (num % 5 / 1)
+end
+
+puts old_roman_numeral(2456)
diff --git a/ch09-writing-your-own-methods/roman_numerals.rb b/ch09-writing-your-own-methods/roman_numerals.rb
index 5c93b59ac..72647d2e5 100644
--- a/ch09-writing-your-own-methods/roman_numerals.rb
+++ b/ch09-writing-your-own-methods/roman_numerals.rb
@@ -1,3 +1,42 @@
 def roman_numeral num
-  # your code here
-end
\ No newline at end of file
+  roman_numeral = ""
+
+  thousands = (num / 1000)
+  hundreds = (num % 1000 / 100)
+  tens = (num % 100 / 10)
+  singles = (num % 10 / 1)
+
+  roman_numeral = "M" * thousands
+
+  if hundreds == 9
+    roman_numeral = roman_numeral + "CM"
+  elsif hundreds == 4
+    roman_numeral = roman_numeral + "CD"
+  else
+    roman_numeral = roman_numeral + "D" * (num % 1000 / 500)
+    roman_numeral = roman_numeral + "C" * (num % 500 / 100)
+  end
+
+  if tens == 9
+    roman_numeral = roman_numeral + "XC"
+  elsif tens == 4
+    roman_numeral = roman_numeral + "XL"
+  else
+    roman_numeral = roman_numeral + "L" * (num % 100 / 50)
+    roman_numeral = roman_numeral + "X" * (num % 50 / 10)
+  end
+
+  if singles == 9
+    roman_numeral = roman_numeral + "IX"
+  elsif singles == 4
+    roman_numeral = roman_numeral + "IV"
+  else
+    roman_numeral = roman_numeral + "V" * (num % 10 / 5)
+    roman_numeral = roman_numeral + "I" * (num % 5 / 1)
+  end
+
+  roman_numeral
+
+end
+
+puts roman_numeral(2644)
diff --git a/ch10-nothing-new/dictionary_sort.rb b/ch10-nothing-new/dictionary_sort.rb
index c9893d0fd..f286e2e4f 100644
--- a/ch10-nothing-new/dictionary_sort.rb
+++ b/ch10-nothing-new/dictionary_sort.rb
@@ -1,3 +1,23 @@
-def dictionary_sort arr
-  # your code here
-end
\ No newline at end of file
+def dictionary_sort array
+  recursive_dictionary_sort array, []
+end
+
+def recursive_dictionary_sort unsorted, sorted
+  if unsorted.length <= 0
+    return sorted
+  end
+  smallest = unsorted.pop
+  still_unsorted = []
+  unsorted.each do |test_object|
+    if test_object.downcase < smallest.downcase
+      still_unsorted.push smallest
+      smallest = test_object
+    else
+      still_unsorted.push test_object
+    end
+  end
+  sorted.push smallest
+  recursive_dictionary_sort still_unsorted, sorted
+end
+
+puts(dictionary_sort(['can','feel','singing','Like','A','can']))
diff --git a/ch10-nothing-new/english_number.rb b/ch10-nothing-new/english_number.rb
index c0129bc4e..e01167245 100644
--- a/ch10-nothing-new/english_number.rb
+++ b/ch10-nothing-new/english_number.rb
@@ -1,3 +1,130 @@
 def english_number number
-  # your code here
+  if number < 0 # No negative numbers.
+    return 'Please enter a number that isn\'t negative.'
+  end
+  if number == 0
+    return 'zero'
+  end
+
+  # No more special cases! No more returns!
+
+  num_string = '' # This is the string we will return.
+
+  ones_place = ['one', 'two', 'three',
+                'four', 'five', 'six',
+                'seven', 'eight', 'nine']
+
+  tens_place = ['ten', 'twenty', 'thirty',
+                'forty', 'fifty', 'sixty',
+                'seventy', 'eighty', 'ninety']
+
+
+  teenagers = ['eleven', 'twelve', 'thirteen',
+               'fourteen', 'fifteen', 'sixteen',
+               'seventeen', 'eighteen', 'nineteen']
+
+  zillions = [['hundred', 2],
+              ['thousand', 3],
+              ['million', 6],
+              ['billion', 9],
+              ['trillion', 12],
+              ['quadrillion', 15],
+              ['quintillion', 18],
+              ['sextillion', 21],
+              ['septillion', 24],
+              ['octillion', 27],
+              ['nonillion', 30],
+              ['decillion', 33],
+              ['undecillion', 36],
+              ['duodecillion', 39],
+              ['tredecillion', 42],
+              ['quattuordecillion', 45],
+              ['quindecillion', 48],
+              ['sexdecillion', 51],
+              ['septendecillion', 54],
+              ['octodecillion', 57],
+              ['novemdecillion', 60],
+              ['vigintillion', 63],
+              ['googol', 100]]
+
+  # "left" is how much of the number
+  # we still have left to write out.
+  # "write" is the part we are
+  # writing out right now.
+  # write and left...get it? :)
+  left = number
+
+  while zillions.length > 0
+    zil_pair = zillions.pop
+    zil_name = zil_pair[0]
+    zil_base = 10 ** zil_pair[1]
+    write = left/zil_base # How many zillions left?
+    left = left - write*zil_base # Subtract off those zillions.
+
+    if write > 0
+      # Now here's the recursion:
+      prefix = english_number write
+      num_string = num_string + prefix + ' ' + zil_name
+
+      if left > 0
+        # So we don't write 'two billionfifty-one'...
+        num_string = num_string + ' '
+      end
+    end
+  end
+
+  write = left/10 # How many tens left?
+  left = left - write*10 # Subtract off those tens.
+
+  if write > 0
+    if ((write == 1) and (left > 0))
+      # Since we can't write "tenty-two" instead of
+      # "twelve", we have to make a special exception
+      # for these.
+      num_string = num_string + teenagers[left-1]
+      # The "-1" is because teenagers[3] is
+      # 'fourteen', not 'thirteen'.
+
+      # Since we took care of the digit in the
+      # ones place already, we have nothing left to write.
+      left = 0
+    else
+      num_string = num_string + tens_place[write-1]
+      # The "-1" is because tens_place[3] is
+      # 'forty', not 'thirty'.
+    end
+
+    if left > 0
+      # So we don't write 'sixtyfour'...
+      num_string = num_string + '-'
+    end
+  end
+
+  write = left # How many ones left to write out?
+  left = 0 # Subtract off those ones.
+
+  if write > 0
+    num_string = num_string + ones_place[write-1]
+    # The "-1" is because ones_place[3] is
+    # 'four', not 'three'.
+  end
+
+  # Now we just return "num_string"...
+  num_string
 end
+
+# puts english_number( 0)
+# puts english_number( 9)
+# puts english_number( 10)
+# puts english_number( 11)
+# puts english_number( 17)
+# puts english_number( 32)
+# puts english_number( 88)
+# puts english_number( 99)
+# puts english_number(100)
+# puts english_number(101)
+# puts english_number(234)
+# puts english_number(3211)
+# puts english_number(999999)
+# puts english_number(1000000000000)
+# puts english_number(109238745102938560129834709285360238475982374561034)
diff --git a/ch10-nothing-new/ninety_nine_bottles_of_beer.rb b/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
index 801de24bd..619d7bfb5 100644
--- a/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
+++ b/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
@@ -1 +1,79 @@
-# your code here
\ No newline at end of file
+def englishNumber number
+
+  if number < 0
+    return "Please enter a number which isn't negative"
+  end
+  if number == 0
+    return "zero"
+  end
+
+  numString = ""
+
+  onesPlace = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
+  tensPlace = ["ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]
+  teenPlace = ["eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]
+  hugeNumber = [["hundred", 2],["thousand", 3], ["million", 6], ["billion", 9], ["trillion", 12], ["quadrillion", 15]]
+
+  left = number
+
+  while hugeNumber.length > 0
+    hugeNumber_pair = hugeNumber.pop
+    hugeNumber_name = hugeNumber_pair[0]
+    hugeNumber_base = 10 ** hugeNumber_pair[1]
+    write = left / hugeNumber_base
+    left = left - write * hugeNumber_base
+
+    if write > 0
+      prefix = englishNumber write
+      numString = numString + prefix + "-" + hugeNumber_name
+    end
+
+    if left > 0
+      numString = numString + ""
+    end
+  end
+
+
+  write = left/10
+  left = left - write*10
+
+  if write > 0
+    if ((write == 1) and (left > 0))
+      numString = numString + teenPlace[left-1]
+      left = 0
+    else
+      numString = numString + tensPlace[write-1]
+    end
+
+    if left > 0
+      numString = numString + "-"
+    end
+  end
+
+  write = left
+  left  = 0
+
+  if write > 0
+    numString = numString + onesPlace[write-1]
+  end
+
+  numString
+
+end
+
+
+bottle_starting_count = 10
+bottle_count = bottle_starting_count
+while bottle_count > 1
+  puts englishNumber(bottle_count).capitalize + " bottles of beer on the wall"
+  puts englishNumber(bottle_count).capitalize + " bottles of beer"
+  puts "You take 1 down, pass it around"
+  bottle_count = bottle_count - 1
+  puts englishNumber(bottle_count).capitalize + " bottles of beer on the wall"
+
+end
+
+puts "One bottle of beer on the wall"
+puts "One bottle of beer"
+puts "You take 1 down, pass it around"
+puts "No more bottles of beer on the wall"
diff --git a/ch10-nothing-new/shuffle.rb b/ch10-nothing-new/shuffle.rb
index a486ad94c..b80bbd52a 100644
--- a/ch10-nothing-new/shuffle.rb
+++ b/ch10-nothing-new/shuffle.rb
@@ -1,3 +1,25 @@
-def shuffle arr
-  # your code here
-end
\ No newline at end of file
+def shuffle array
+  shuffled = []
+
+  while array.length > 0
+
+    random_index = rand(array.length)
+
+    current_index = 0
+    new_array = []
+
+    array.each do |index|
+      if current_index == random_index
+        shuffled.push index
+      else
+        new_array.push index
+      end
+      current_index = current_index + 1
+    end
+
+    array = new_array
+  end
+  shuffled
+end
+
+puts(shuffle(["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]))
diff --git a/ch10-nothing-new/sort.rb b/ch10-nothing-new/sort.rb
index 44c6deb58..431886156 100644
--- a/ch10-nothing-new/sort.rb
+++ b/ch10-nothing-new/sort.rb
@@ -1,3 +1,23 @@
-def sort arr
-  # your code here
-end
\ No newline at end of file
+def sort array
+  recursive_sort array, []
+end
+
+def recursive_sort unsorted, sorted
+  if unsorted.length <= 0
+    return sorted
+  end
+  smallest = unsorted.pop
+  still_unsorted = []
+  unsorted.each do |test_object|
+    if test_object < smallest
+      still_unsorted.push smallest
+      smallest = test_object
+    else
+      still_unsorted.push test_object
+    end
+  end
+  sorted.push smallest
+  recursive_sort still_unsorted, sorted
+end
+
+puts(sort(['can','feel','singing','like','a','can']))
diff --git a/ch11-reading-and-writing/build_a_better_playlist.rb b/ch11-reading-and-writing/build_a_better_playlist.rb
index 3b31bd241..099626a7d 100644
--- a/ch11-reading-and-writing/build_a_better_playlist.rb
+++ b/ch11-reading-and-writing/build_a_better_playlist.rb
@@ -1,3 +1,37 @@
 def music_shuffle filenames
-  # your code here
+  len = filenames.length
+  #obtian the files length
+  2.times do
+    l_idx = 0
+    r_idx = len / 2
+    shuf = []
+#create a vegas style deck shuffle
+    while shuf.length < len
+      if shuf.length % 2 == 0
+        shuf.push(filenames[r_idx])
+        r_idx = r_idx + 1
+      else
+        shuf.push(filenames[l_idx])
+        l_idx = l_idx + 1
+      end
+    end
+    filenames = shuf
+  end
+
+  arr = []
+  cut = rand(len)
+  idx = 0
+#randomly cut the deck via the filename length
+  while idx < len
+    arr.push(filenames[(idx+cut)%len])
+    idx = idx + 1
+  end
+#push filenames in the open array
+arr
 end
+#output the array
+
+songs = ['aa/bbb',   'aa/ccc',   'aa/ddd',
+         'AAA/xxxx', 'AAA/yyyy', 'AAA/zzzz', 'foo/bar']
+
+puts(music_shuffle(songs))
diff --git a/ch11-reading-and-writing/build_your_own_playlist.rb b/ch11-reading-and-writing/build_your_own_playlist.rb
index 801de24bd..d4e0dba33 100644
--- a/ch11-reading-and-writing/build_your_own_playlist.rb
+++ b/ch11-reading-and-writing/build_your_own_playlist.rb
@@ -1 +1,37 @@
-# your code here
\ No newline at end of file
+def shuffle array
+  shuffled = []
+#open an empy array
+  while array.length > 0
+    random_index = rand(array.length)
+#randomise the array using length as the point of randomisation
+    current_index = 0
+    new_array = []
+#creates an open array and sets the initial index position
+    array.each do |index|
+      if current_index == random_index
+        shuffled.push index
+        #ensures the index is moving
+      else
+        new_array.push index
+        #pushes values to the new array
+      end
+      current_index = current_index + 1
+      #increases the current index position
+    end
+
+    array = new_array
+  end
+  shuffled
+  #runs the shufled method
+end
+
+music_files = shuffle(Dir["**/*.mp3"])
+#gains files from the specified directory and shuffles the files using the above method
+File.open "new_playlist.m3u", 'w' do |add|
+  music_files.each do |mp3|
+    add.write mp3 + "\n"
+    #add the mp3 file to the playlist and a new line
+  end
+end
+
+puts "Complete."
diff --git a/ch11-reading-and-writing/safer_picture_downloading.rb b/ch11-reading-and-writing/safer_picture_downloading.rb
index 801de24bd..114302523 100644
--- a/ch11-reading-and-writing/safer_picture_downloading.rb
+++ b/ch11-reading-and-writing/safer_picture_downloading.rb
@@ -1 +1,25 @@
-# your code here
\ No newline at end of file
+Dir.chdir '~/pictures'
+
+pic_names = Dir['~/ExternalHD/Picturs']
+puts 'What would you like to call this batch?'
+batch_name = gets.chomp
+
+puts
+print "Downloading #{pic_names.length} files:  "
+
+pic_number = 1
+
+pic_names.each do |name|
+  print '.'
+
+  new_name = if pic_number < 10
+    "#{batch_name}0#{pic_number}.jpg"
+  else
+    "#{batch_name}#{pic_number}.jpg"
+  end
+
+  File.rename name, new_name
+  pic_number = pic_number + 1
+end
+puts
+puts 'Done!'
diff --git a/ch12-new-classes-of-objects/birthday_helper.rb b/ch12-new-classes-of-objects/birthday_helper.rb
index 801de24bd..14fc38894 100644
--- a/ch12-new-classes-of-objects/birthday_helper.rb
+++ b/ch12-new-classes-of-objects/birthday_helper.rb
@@ -1 +1,28 @@
-# your code here
\ No newline at end of file
+birth_dates = {}
+File.read('birthdates.txt').each_line do |line|
+  line = line.chomp
+# Load the file and separate the list onto separate lines.
+  first_comma = 0
+  while line[first_comma] != ',' &&
+        first_comma < line.length
+    first_comma = first_comma + 1
+  end
+  # Separate the data using the commas as split points
+  name = line[0..(first_comma - 1)]
+  date = line[-12..-1]
+  birth_dates[name] = date
+  # Store the names and dates from the File
+end
+
+puts 'Whose birthday would you like to know?'
+name = gets.chomp
+# Get user input about who's birthday they would like to know
+date = birth_dates[name]
+
+if date == nil
+  puts "Oooh, I don't know that one..."
+  # If the name doesn't exist in the file output
+else
+  puts date[0..5]
+  # Output the date from the File
+end
diff --git a/ch12-new-classes-of-objects/happy_birthday.rb b/ch12-new-classes-of-objects/happy_birthday.rb
index 801de24bd..ee9425fe1 100644
--- a/ch12-new-classes-of-objects/happy_birthday.rb
+++ b/ch12-new-classes-of-objects/happy_birthday.rb
@@ -1 +1,35 @@
-# your code here
\ No newline at end of file
+puts "What year were you born in?"
+year = gets.chomp.to_i
+
+puts "What month were you born in? (1 - 12)"
+month = gets.chomp.to_i
+
+puts "What day were you born on?"
+day = gets.chomp.to_i
+
+current_time = Time.new
+birth_time = Time.gm(year, month, day)
+
+current_time_year = current_time.year
+current_time_month = current_time.month
+current_time_day = current_time.day
+
+if current_time_month > month
+  spank_times = current_time_year - year
+  spank_times.times {puts "SPANK!"}
+elsif current_time_month == month
+  if current_time_day > day
+    spank_times = current_time_year - year
+    spank_times.times {puts "SPANK!"}
+  elsif current_time_day == day
+    puts "Happy Birthday!"
+    spank_times = current_time_year - year
+    spank_times.times {puts "SPANK!"}    
+  else
+    spank_times = current_time_year - year -1
+    spank_times.times {puts "SPANK!"}
+  end
+else
+  spank_times = current_time_year - year -1
+  spank_times.times {puts "SPANK!"}
+end
diff --git a/ch12-new-classes-of-objects/one_billion_seconds.rb b/ch12-new-classes-of-objects/one_billion_seconds.rb
index 801de24bd..821e9e0fd 100644
--- a/ch12-new-classes-of-objects/one_billion_seconds.rb
+++ b/ch12-new-classes-of-objects/one_billion_seconds.rb
@@ -1 +1,2 @@
-# your code here
\ No newline at end of file
+puts(Time.gm(1986, 11, 21, 00, 15) + 10**9)
+#get the time and add 1 billion seconds (10**9)
diff --git a/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb b/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
index 037b6cb09..1470dada4 100644
--- a/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
+++ b/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
@@ -1,3 +1,41 @@
 def roman_to_integer roman
-  # your code here
-end
\ No newline at end of file
+  digit_vals = {
+  'i' => 1,
+  'v' => 5,
+  'x' => 10,
+  'l' => 50,
+  'c' => 100,
+  'd' => 500,
+  'm' => 1000}
+  #setting the roman numeral letters to values utilising a hash
+  total = 0
+  prev = 0
+  #setting up the initial conditions
+  index = roman.length - 1
+  #starting with the initial index position
+  while index >= 0
+    c = roman[index].downcase
+    #ensuring all the roman numerals are in lowercase so don't have to work with both cases
+    index = index - 1
+    val = digit_vals[c]
+    #moving the index along the numeral and comparing to the hash to ensure they are all roman numerals
+    if !val
+      puts 'This is not a valid roman numeral!'
+      return
+      #ensuring a valid roman numeral was entered
+    end
+    if val < prev
+      val = val * -1
+      #ensuring it is a positive value
+    else
+      prev = val
+    end
+    total = total + val
+    #calculating the value
+ end
+total
+#output total value
+end
+
+puts(roman_to_integer('mcmxcix'))
+puts(roman_to_integer('CCCLXV'))
diff --git a/ch13-creating-new-classes/extend_built_in_classes.rb b/ch13-creating-new-classes/extend_built_in_classes.rb
index c3e793933..b6f15d685 100644
--- a/ch13-creating-new-classes/extend_built_in_classes.rb
+++ b/ch13-creating-new-classes/extend_built_in_classes.rb
@@ -1,3 +1,23 @@
 class Integer
-  # your code here
-end
\ No newline at end of file
+  
+  def factorial
+    raise 'Must not use negative integer' if self < 0
+    (self <= 1) ? 1 : self * (self-1).factorial
+  end
+
+  def to_roman
+    roman_numeral = ""
+
+    roman_numeral = roman_numeral + "M" * (self / 1000)
+    roman_numeral = roman_numeral + "D" * (self % 1000 / 500)
+    roman_numeral = roman_numeral + "C" * (self % 500 / 100)
+    roman_numeral = roman_numeral + "L" * (self % 100 /50)
+    roman_numeral = roman_numeral + "X" * (self % 50 / 10)
+    roman_numeral = roman_numeral + "V" * (self % 10 / 5)
+    roman_numeral = roman_numeral + "I" * (self % 5 / 1)
+
+    roman_numeral
+  end
+end
+
+puts 26.to_roman
diff --git a/ch13-creating-new-classes/interactive_baby_dragon.rb b/ch13-creating-new-classes/interactive_baby_dragon.rb
index 801de24bd..10938934d 100644
--- a/ch13-creating-new-classes/interactive_baby_dragon.rb
+++ b/ch13-creating-new-classes/interactive_baby_dragon.rb
@@ -1 +1,125 @@
-# your code here
\ No newline at end of file
+class Dragon
+  def initialize name
+    @name = name
+    @asleep = false
+    @stuff_in_belly = 10
+    @stuff_in_intestine = 0
+    puts "#{@name} is born."
+  end
+
+  def feed
+    puts "You feed #{@name}."
+    @stuff_in_belly =10
+    passage_of_time
+  end
+
+  def walk
+    puts "You walk #{@name}."
+    @stuff_in_intestine = 0
+    passage_of_time
+  end
+
+  def put_to_bed
+    puts "You put #{@name} to bed."
+    @asleep = true
+    3.times do
+      if @asleep
+        passage_of_time
+      end
+      if @asleep
+        puts "#{@name} snores, filling the room with smoke."
+      end
+    end
+
+    if @asleep
+      @asleep = false
+      puts "#{@name} wakes up slowly."
+    end
+  end
+
+  def toss
+    puts "You toss #{@name} up into the air."
+    puts 'He giggles, which singes your eyebrows.'
+    passage_of_time
+  end
+
+  def rock
+    puts "You rock #{@name} gently."
+    @asleep = true
+    puts 'He briefly dozes off...'
+    passage_of_time
+    if @asleep
+      @asleep = false
+      puts '...but wakes when you stop.'
+    end
+  end
+
+  private
+  def hungry?
+    @stuff_in_belly <= 2
+  end
+
+  def poopy?
+    @stuff_in_intestine >= 8
+  end
+
+  def passage_of_time
+    if @stuff_in_belly > 0
+      @stuff_in_belly = @stuff_in_belly - 1
+      @stuff_in_intestine = @stuff_in_intestine + 1
+    else
+      if @asleep
+        @asleep = false
+        puts 'He wakes up suddenly!'
+      end
+    puts "#{@name} is starving!  In desperation, he ate YOU!"
+    exit
+  end
+
+  if @stuff_in_intestine >= 10
+    @stuff_in_intestine = 0
+    puts "Whoops! #{@name} had an accident..."
+  end
+
+  if hungry?
+    if @asleep
+      @asleep = false
+      puts 'He wakes up suddenly!'
+    end
+    puts "#{@name}'s stomach grumbles..."
+  end
+
+  if poopy?
+    if @asleep
+      @asleep = false
+      puts 'He wakes up suddenly!'
+    end
+  puts "#{@name} does the potty dance..."
+  end
+end
+end
+
+puts 'What would you like to name your baby dragon?'
+name = gets.chomp
+pet  = Dragon.new name
+
+while true
+  puts
+  puts 'commands:  feed, toss, walk, rock, put to bed, exit'
+  command = gets.chomp
+  if command == 'exit'
+    exit
+  elsif command == 'feed'
+    pet.feed
+  elsif command == 'toss'
+    pet.toss
+  elsif command == 'walk'
+    pet.walk
+  elsif command == 'rock'
+    pet.rock
+  elsif command == 'put to bed'
+    pet.put_to_bed
+  else
+  puts 'Huh? Please type one of the commands.'
+  end
+end
diff --git a/ch13-creating-new-classes/orange_tree.rb b/ch13-creating-new-classes/orange_tree.rb
index 025d08907..c7e1796e7 100644
--- a/ch13-creating-new-classes/orange_tree.rb
+++ b/ch13-creating-new-classes/orange_tree.rb
@@ -7,5 +7,59 @@
 
 
 class OrangeTree
-  # your code here
+  def initialize
+    @height = 0
+    @orange_count = 0
+    @alive = true
+  end
+# Initializing the starting values and local variables
+  def height
+    if @alive
+      @height.round(1)
+    else
+      'A dead tree is not very tall. :('
+    end
+  end
+# Checking if still alive and calling upon then height variable
+  def count_the_oranges
+    if @alive
+      @orange_count
+    else
+      'A dead tree has no oranges. :('
+    end
+  end
+# Checking if alive and calling on the orange count
+  def one_year_passes
+    if @alive
+      @height = @height + 0.4 # Incrementing the height of the tree
+      @orange_count = 0 # old oranges fall off
+      if @height > 10 && rand(2) > 0
+        # tree dies
+        @alive = false
+        'Oh, no! The tree is too old, and has died. :('
+      elsif @height > 2
+        @orange_count = (@height * 15 - 25).to_i # Calculating how many new oranges grow
+        "This year your tree grew to #{@height.round(1)}m tall," +
+          " and produced #{@orange_count} oranges."
+      else
+        "This year your tree grew to #{@height.round(1)}m tall," +
+          " but is still too young to bear fruit."
+      end
+    else
+      'A year later, the tree is still dead. :('
+    end
+  end
+
+  def pick_an_orange
+    if @alive
+      if @orange_count > 0
+        @orange_count = @orange_count - 1 # Decreasing the local variable for orange count
+        'You pick a juicy, delicious orange!'
+      else
+        'You search every branch, but find no oranges.'
+      end
+    else
+      'A dead tree has nothing to pick. :('
+    end
+  end
 end
diff --git a/ch14-blocks-and-procs/better_program_logger.rb b/ch14-blocks-and-procs/better_program_logger.rb
index 0e2e18d57..10ef01a3b 100644
--- a/ch14-blocks-and-procs/better_program_logger.rb
+++ b/ch14-blocks-and-procs/better_program_logger.rb
@@ -1,3 +1,30 @@
-def log desc, &block
-  # your code here
-end
\ No newline at end of file
+$logger_depth = 0
+
+def better_log desc, &block
+  prefix = ' '*$logger_depth
+
+  puts prefix + 'Beginning "' + desc + '"...'
+
+  $logger_depth = $logger_depth + 1
+
+  result = block.call
+
+  $logger_depth = $logger_depth - 1
+  puts prefix + '..."' + desc + '" finished, returning: ' + result.to_s
+end
+
+better_log 'outer block' do
+  better_log 'some little block' do
+    better_log 'teeny-tiny block' do
+      'lOtS oF lOVe'.downcase
+    end
+
+    7 * 3 * 2
+  end
+
+  better_log 'yet another block' do
+    '!doof naidnI evol I'.reverse
+  end
+
+  '0' == "0"
+end
diff --git a/ch14-blocks-and-procs/even_better_profiling.rb b/ch14-blocks-and-procs/even_better_profiling.rb
index b01b78fd8..c6812af9e 100644
--- a/ch14-blocks-and-procs/even_better_profiling.rb
+++ b/ch14-blocks-and-procs/even_better_profiling.rb
@@ -1,3 +1,13 @@
 def profile block_description, &block
-  # your code here
-end
\ No newline at end of file
+  profiling_on = false
+
+  if profiling_on = true
+    start_time = Time.new
+    block.call
+
+    duration = Time.new - start_time
+    puts "#{block_description}: #{duration} seconds"
+  else
+    block.call
+  end
+end
diff --git a/ch14-blocks-and-procs/grandfather_clock.rb b/ch14-blocks-and-procs/grandfather_clock.rb
index 916f6d354..9f73bde3f 100644
--- a/ch14-blocks-and-procs/grandfather_clock.rb
+++ b/ch14-blocks-and-procs/grandfather_clock.rb
@@ -1,3 +1,18 @@
 def grandfather_clock &block
-  # your code here
-end
\ No newline at end of file
+  hour = Time.new.hour
+
+  if hour >= 13
+    hour = hour - 12
+  end
+
+  if hour == 0
+    hour = 12
+  end
+
+  hour.times do
+    block.call
+  end
+end
+
+grandfather_clock do puts 'DONG!'
+end
diff --git a/ch14-blocks-and-procs/program_logger.rb b/ch14-blocks-and-procs/program_logger.rb
index 0e2e18d57..3438199fb 100644
--- a/ch14-blocks-and-procs/program_logger.rb
+++ b/ch14-blocks-and-procs/program_logger.rb
@@ -1,3 +1,17 @@
-def log desc, &block
-  # your code here
-end
\ No newline at end of file
+def program_log desc, &block
+  puts 'Beginning "' + desc + '"...'
+  result = block.call
+  puts '..."' + desc + '" finished, returning: ' + result.to_s
+end
+
+program_log 'outer block' do
+  program_log 'some little block' do
+    1**1 + 2**2
+  end
+
+  program_log 'yet another block' do
+    '!doof iahT ekil I'.reverse
+  end
+
+  '0' == 0
+end