updating community links

Author: choldgraf

community.md

@@ -14,7 +14,7 @@ or simply sharing your work with your colleagues and friends.
 ## Join the Jupyter community
 
 If you're interested in joining the Jupyter community (yay!) we recommend
-checking out the Jupyter [Contributing guide](LINK TODO). This contains
+checking out the Jupyter [Contributing guide](https://github.com/jupyter/help/blob/master/CONTRIBUTING.md). This contains
 information about the different projects in the Jupyter ecosystem, the tools
 and skills that are useful for each project, and other ways that you can
 become a part of the Jupyter community.
@@ -23,10 +23,11 @@ become a part of the Jupyter community.
 
 Many members of the Jupyter community host events to connect others that use
 Jupyter and other tools in the open data analytics stack. For example,
-[JupyterCon](TODO LINK) is an annual conference that brings together many
-different groups represented in the Jupyter Community. [Jupyter Days](TODO LINK)
+[JupyterCon](https://conferences.oreilly.com/jupyter/jup-ny) is an annual conference that brings together many
+different groups represented in the Jupyter Community. **Jupyter Days**
 are smaller, locally-organized events for learning and connecting with one
-another. If you'd like to organize a Jupyter Days event in your community, please
+another. For example, [here's a post announcing Jupyter Days in Atlanta](https://blog.jupyter.org/announcing-jupyter-day-atlanta-spring-2018-d68ebee2c6cb).
+If you'd like to organize a Jupyter Days event in your community, please
 reach out!
 
 ## Participate online
@@ -35,7 +36,7 @@ Jupyter also has a number of online communication channels to help keep in touch
 
 As you interact with others in the Jupyter ecosystem, remember that we have a strong
 commitment to being an **open, inclusive, and positive community**. Please read the
-[Jupyter Code of Conduct](TODO LINK) for guidance on how to interact with others in
+[Jupyter Code of Conduct](https://github.com/jupyter/governance/blob/master/conduct/code_of_conduct.md) for guidance on how to interact with others in
 a way that makes the community thrive.
 
 Below is a short list of gitter channels, email listservs, and github repositories