So I was browsing the Google Open Source Blog, when I found a link to this Git Tutorial. I wish I had found this a month ago when I started learning Git. SymPy only has a very basic tutorial for Git. Their main tutorial is still written for Mercurial, which they used until recently.
Anyway, I have been reading the tutorial, and so far it is awesome, so I thought it would make a good post here.
Aaron Meurer's SymPy Blog 