Mostly read later links - expect the list to grow

Assorted

• Nice: 25 Tips for Intermediate Git Users
• Pro Git - Reset Demystified
• Are merges in Git symmetric? - nice links to the git mailing list too
• Hamano quoting Linus
• Best explanation of detached HEAD

Blame

• Code Archaeology with Git - John Firebaugh
• Learn More About the History of a Line with Git Blame - Zsolt Fabók

Both are octopress blogs :D