This two page Google Cheat Sheet lists all Google services and tools as well as background information. The Cheat Sheet offers a great reference to grasp of basic to advance Google query building concepts and ideas.http://www.adelaider.com/google/
download:
http://www.adelaider.com/google/?cheatsheet&page=2
http://www.adelaider.com/google/?cheatsheet&page=1
PDF download