I love that they try to make it assessible. But I disagree with that it would be an acceptable goal in git just to understand a subset of it. You need to understand nearly everything, even the internals. Only then it can really become useful to you.

The mistake the community made is putting git on the throne of version control. It's not. It's a tool for experts that can do a lot for you if you know how to use it. But to achieve that it pays the price of not really being assessible.

Now that it's in its position, the best thing you can do is to learn it. There is the git book. Read it. Annoying, I know. But that's the gameplan. Not doing it is just dragging out the inevitable.