[Maro]

That's not true. You can't learn git in 20 minutes or 2 hours, unless you equate learning git to learning to type simple commands like 'git pull' and related. But then you're not really learning git, you're just typing generic VCS commands.

[eru]

You can read about the basic architecture and concepts of git in 2 hours. It's not that complicated.

You may need more than those 2 hours to really digest and understand everything, and see how it plays out in practise. But after the first 2 hours you should be ready to use git. (Actually you should be using git, because how else are you going to learn?)