Absolute Beginner's Guide for NetHack 3.4.1
Basic primer for new players. Does not contain spoilers.
List of NetHack Spoilers
Collection of spoilers relevant to 3.4.3 release.
NetHack 3.4 Spoilers
Spoilers, NetHack Gazetteer, NetHack Code, Usenet FAQ, and miscellaneous help.
Ye Olde NetHack Bestiary
Statistics on creatures encountered during gameplay.
Yet Another NetHack Site
Spoilers for versions 3.3.1, 3.4.0, and 3.41, including those posted to Usenet.