Its not dead simple but its also not extremely complex.

I'm currently working with some interns and there's just concepts they were never exposed to. Without decent mentoring, git can be difficult because a lot of the workflow does come with experience.

That being said everyone needs to stop acting like its an impossible task to properly do source control. There is some truth that if you don't care enough to do your source control, you don't care enough to write decent code. Its not a moral failing, just take some pride in your craft.

Show the newbies how to care and they'll care enough to want to do it right. Measure twice, cut once and all that.