I think this is a quick summary of the game based on the process of the game. The first page is an overview of the setup, turn structure, and endgame scoring. The second sheet explains each of the actions a player may choose. It also includes a detailed summary of what happens in a turn when you purchase and play/discard a card.
The cheatsheet is cross referenced with the rulebook, and I intend to updated it with the living rules so it is numbered by date (YYMMDD). Of course, please give me feedback and I will happily incorporate them into the file!
120114 Picked up revisions per Steven Carey's notes (except immigrants at setup). Added a note in footer stating which version of the Living Rules this is based on.