Think-like-a-git is a project mainly written in Ruby, it's free.
Lunch & Learn presentation for my coworkers, some of whom will never ever use Git
These are the slides to a lunch-and-learn presentation I did for my coworkers at Renewable Funding on 2011-04-21. I'm about to put them up on Heroku (thanks, schacon, for showoff!), and figured I might as well host them here too.
-Sam