Information Architecture for the World Wide Web was the first book on information architecture as a discipline on the web, where it has come to fruition. Louis Rosenfeld and Peter Morville helped defined the job of IA as it exists in many organizations today.
Now, four years later, a second edition has appeared. It is richer, deeper, fuller and more than ever a necessity for Information Architects and Web Designers. Where the first edition was a primer on the basic concepts, this edition takes you deep into the subtle complexities of IA, while still written in an accessible voice. A single chapter, such as the introduction to search, can worth the price of the book alone.
This is a must-read. If you’ve got the first, you still need the second– they are that different.