Gitology - A wealth of knowledge about Git
A wealth of knowledge about Git — an open source version control system

About Gitology.com

Gitology is a collection of clearly-written guides that teach you how to use Git effectively whether you're a beginner, have some experience, or are an expert.

The site is a Sinatra/HAML app hosted on Heroku.

About the Author

Brian Tanaka has been in the technical field since 1992. He has worked for a wide array of companies such as: The WeLL, Silicon Graphics, Intuit, Nintendo, RealNetworks, and Apple. His magazine articles have appeared in Linux Journal, LinuxWorld.com, and Sys Admin Magazine. He was technical editor on Practical Firewalls by Terry William Ogletree, and is the author of Take Control of Permissions in Leopard.