Finish a tutorial about Git

You mentioned that you may have already done this; if you're not there already, git acquainted with the basic workflows in git.

In general, you'll want to focus on learning how to :

1. Stage and make commits
2. Branch and merge
3. Work with remote repositories

When you feel like you're ready, @AndrewKoons you should look into using legit and twig; it'll improve many of your workflows.
Legit is here:
http://git-legit.org/
https://github.com/kennethreitz/legit

And twig is here:
http://rondevera.github.com/twig/