Cheats and Hints

Association for the Advancement of Dungeon Crawling
Primarily a collection of hints and spoilers.
http://www.swallowtail.org/crawl/

Dungeon Crawl Cheats
Collection of hacked or advanced position save files.
http://truthtree.com/crawl.shtml

Dungeon Crawl Extra Spoilers
Gameplay mechanics explained. Includes sample macro file for Windows.
http://www.crawl.webpark.pl/

R1's Crawl Page
Spoilers and data tables reconstructed from game source files.
http://www.eleves.ens.fr/home/grasland/crawl/

13 Steps to Crawl
Humorous introduction to basic mechanics of play. Screenshots.
http://www.digital-eel.com/13steps/