Learn Git Branching is an interactive git visualization and tutorial. The website contains multiple levels/tasks teaching different aspects of git. Each level starts with a goal and contains helpful instructions. The website features a fake command line for inputting git commands and an interactive git graph visualization, which shows the state of the repository in every step.

Oh My Git! is a cross-platform game showing how Git works. It offers a playing card style interface for new players and an integrated terminal for more advanced usages. It shows the Git repository as a graph and various manipulations are possible. Even interaction with remote repositories is implemented.

The game is implemented in Godot and available as open-source on GitHub.

The website describes bad situations in git and how to solve them.

Git is hard: screwing up is easy, and figuring out how to correct your mistakes is fucking impossible. Git documentation has this chicken-and-egg problem where you can't search for how to get yourself out of a mess, unless you already know the name of the thing you need to know about to resolve your problem.

The blog post explains gits feature of git commit --fixup and how it interacts with autosquashing during rebase. It suggests to enable autosquashing in the gitconfig and offers a nice alias for git fixup to make the selection of the fixup commit simpler.

[alias]
  fixup = "!git log -n 50 --pretty=format:'%h %s' --no-merges | fzf | cut -c -7 | xargs -o git commit --fixup"

[rebase]
  autosquash = true

Small script which makes it easier to check out GitHub pull requests and GitLab merge requests. The syntax is:

git pr 123 # assumes origin
# or
git pr 123 upstream

These websites provide templates for good .gitignore files:

• https://github.com/github/gitignore
• https://www.toptal.com/developers/gitignore