C&P:
Lets face it, unless you have a photographic memory, no developer can
remember all the different functions, options, tags, etc. that exist.
Documentation can be cumbersome at times, thats why I like cheat
sheets. They are quick references that feature the most commonly
forgotten things on a specific topic. You can print them out and hang
them on your wall, or just keep them handy in your bookmarks for quick
reference.
http://www.petefreitag.com/item/455.cfm