I have compiled a list of four cheat sheets for WordPress development.
Woorkup WordPress cheat sheet
(by Woorkup)
Graphicrating WordPress cheatsheet
(by Graphicrating)
An extensive list, available online. A reader of that blog uploaded the cheat sheet as a PDF here.
WP TOY Theme development checklist
(by WP TOY)
Tekka SEO cheat sheet
(by Tekka)
It is always difficult to remember the syntax of APIs. This is where cheat sheets come in handy.
These are three jQuery cheat sheets that I found on the web:
Future Colors.ru jQuery 1.4 cheatsheet
(by Future-Colors.ru)
Impulsestudios.ca jQuery 1.4 cheatsheet
(by Impulsestudios.ca)
Woorkup.com jQuery 1.3 cheatsheet
(by Woorkup.com)
Zack Rusin hat bereits 2007 eine einfache Uebersicht ueber Git erstellt und auf seinem Blog zur Verfuegung gestellt.
Mir hat es sehr geholfen, daher verlinke ich hier mal darauf.
Git Cheat Sheet
(links)
Git Cheatsheet @ Zack Rusin