The first ever CG book I got represents the cornerstone of all Digital Art Masters. It's packed with great insight into the artistic process and work flow covering 2D and 3D artwork. Explained and solved riddles of the time still apply to this date, taking you from concept, research and modelling all the way to materials and texturing, composition and lighting, rendering and post-production.
I've recently checked and there appears to be a limited amount of copies of the book, and it's out of stock on 3DTotal. If you want to get the book, the sooner the better.