Visual Demonstrations

• http://marklodato.github.io/visual-git-guide/index-en.html
• http://ndpsoftware.com/git-cheatsheet.html
• git-pretty.png (Local copy retrieved from the wayback machine. The original author seems to be https://github.com/bobthecow)

Crash Courses

• http://gitimmersion.com/ Great for beginners.
• https://git-scm.com/docs/gitglossary Great if you want the internals.

Good References

• https://git.github.io/git-reference/basic/
• http://git-scm.com/doc
• http://git.kernel.org/cgit/git/git-htmldocs.git/plain/user-manual.html From the creators of git. Load with w3m, then hit v.