http://www.lockergnome.com/web/2011/12/13/how-to-use-github-to-contribute-to-open-source-projects/
If you have ever wanted to get involved with open source software, but were not quite sure on how to get started, GitHub is a great place to start. What's it do? How does it work? It's all explained here.
You can watch the entire live TLDR episode here:
http://www.youtube.com/watch?v=HpiQW4wF_3Q
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