This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
That’s basically how I did it.
To properly learn it using this method, create a directory that contains only text files and sub directories and treat it like a real project. Add files, delete them, play around with updating the repository. Try and go back a few updates and see how the things react. Since it’s not a real project there’s no risk of loss, but you’ll still get to see the effects of what you do.
that’s a necessary step in your learning process, but certainly not sufficient. I’d recommend reading the book, since it shows in greut detail the inner workings of Git along with the basic concepts :
https://git-scm.com/book/en/v2