GitHub Cheat Sheet Overview
A huge collection of useful hidden and not so hidden features of Git and GitHub. The GitHub Cheat Sheet was inspired by Zach Holman's Git and GitHub Secrets talk at Aloha Ruby Conference 2012 and his More Git and GitHub Secrets talk at WDCNZ 2013, and has go on to become an essential list of Git related tips. It covers everything including hidden URL parameters, Gists, keyboard shortcuts, markdown formatting and loads more. They are also accepting pull requests if you have any other tips that have been missed.