What is git anyway? "
Git allows a team of people to work together, all using the same files. And it helps the team cope with the confusion that tends to happen when multiple people are editing the same files." [source]
It is one of the primary ways that coders work together and one of the key tools in the development of open source software. Although it's mostly used by coders, it has lots of potential uses for people who don't code and is very useful for anyone who is learning to code.