There are many free tutorials on how to use git that might be useful. For our purposes, you only need to know how to commit, push, pull, and interact with remote repositories. You could learn much more about git, however.
This cheat sheet from Github is useful for remembering the commands you might regularly use:
https://education.github.com/git-cheat-sheet-education.pdf
The instructions on the Working on Softcite Data Files page will also remind you of what commands you need to use.
To learn more about git and Github, there are many resources available. Some students have recommended these resources in the past: