Justin, on his website darkscarab.com, published a review of Colin Lister's "Materials and Textures Cookbook" and provides a small overview about what the book covers, how it is structured, and who the target audience is.
Link to the review:
In addition he also hosts a design challenge and offers a free version
Interested in getting your hands on a Blender book? Well, here's your chance! All you have to do is participate in the DS Challenge. The DS Challenge has been made to challenge Blender users to work around limitations and find new solutions that otherwise would have been overlooked. Not only does this get you to learn more about Blender, but you also have a chance to win a prize for doing so!
Link to the Challenge: