Learned about Git in 2012, but even a decade later, I still don't quite understand it. Let this repo finally help me master it

Main reference file: ProGit2024.pdf

Officeial Resources

1. Official site: https://git-scm.com/
2. Cheat sheet: https://training.github.com/downloads/github-git-cheat-sheet.pdf
3. Training materials: https://git-scm.com/doc/ext

1. Compare any two commits

2. Push to empty repo for the first time

3. Catch up with remote repo? and set a new branch

4. How to 'regrete'?

5. How to 'merge'?

6. See repo size)