His Dark Materials
BridgeToTheStars.Net, Cittàgazze, DarkMaterials.com: Unofficial Fansite, His Dark Materials, The Daemon Page, The Fiction of Ceres Wunderkind
Guardian - Driven by Daemons
Interview with the author includes a discussion of his life history and how it has impacted his writing.
Guardian Unlimited: A Wizard with Worlds
Profile and interview with Philip Pullman, just before "The Amber Spyglass" was published.
Meet Phillip Pullman
A biography of the author from Scholastic.
Philip Pullman, Writer of Stories
This short paper discusses the first two books in Philip Pullman's trilogy, His Dark Materials. It also has a biography of the author.
Powells.com Interviews - Philip Pullman
Interview with the author.