In case you get started with Git, but you feel lost or you want to verify what you know, or you simply have no idea what this Git is... try this presentation. We used it several times to get engineers and non-engineers trained. It starts slowly, but also includes fundamentals to understand the difference between traditional source control and Git.
No warranties whatsoever of course. This is based on our experience, trial and error as well as assumptions. Git is complex, but beautiful.
Feedback welcome... and it is CC-BY-SA. So use it, share it, improve it.
P.S: This presentation will be updated often.