Git is, like many professional tools, something you simply got to learn.
But like with many professinal tools, you don't need to know everything to get to work.
I don't know all Photoshop or Ableton Live features, but I can improve my photos or create songs non the less.
With these commands you can already start your own repo and work on it locally:
git init // crate new repo
git status // show which files are changed and which of them are staged
git add -p // add "chunks" of changed files to the stage
git commit -m "" // commit everything added to the stage with a commit message
git log // show a list of commits
git checkout // throw away all changes since the last commit (one file)
git reset --hard // throw away all changes since the last commit (all files)
If you want to work with a repo from somewhere else like Github etc., you need a few extra commands:
git clone // clone a remote repository locally
git pull // download and merge new commits in the remote repo that happened since the last clone/pull
git push // uploading your own changes after a commit to the remote repo
I think these 10 commands are all that is needed to get your own project into Git.
Yes, the more people are working on a project, the more commands you need, like creating a new branch and getting commits from one branch to another, or amending commits because you forgot something etc.
For a professional tool this isn't too much, I think. The 10 commands I mentioned will be remembered in less than a week. Most of the rest isn't needed often (maybe merge/rebase and branch depending on how you intend to use Git), but they shouldn't take too long either.