The Black Library - dark fiction set in Games Workshop's Warhammer and Warhammer 40,000 universes
Varsity Publications - publishers of The Oxford & Cambridge May Anthologies
The Black Library Bolthole - fan and author discussion of Black Library fiction and background
Writers & Artists
The official website for Clint Langley - cover artist for Reiksguard & Imperial Glory.
The official website for Dominic Harman - cover artist for Relentless.
Background & source material
Lexicanum - the unofficial encyclopedia for the Warhammer universes