More to explore:
Designing Web Navigation: Optimizing the User Experience: James Kalbach, Aaron Gustafson: 9780596528102: Amazon.com: Books
The Elements of User Experience: User-Centered Design for the Web and Beyond (2nd Edition) (Voices That Matter) by Jesse James Garrett, www.amazon.com/...
User Experience Design
Undercover User Experience Design (Voices That Matter) by Cennydd Bowles www.amazon.com/...
Sketching User Experiences: Getting the Design Right and the Right Design (Interactive Technologies)
The UX Book: Process and Guidelines for Ensuring a Quality User Experience by Rex Hartson, www.amazon.com/...
Observing the User Experience: A Practitioner's Guide to User Research (Interactive Technologies):Amazon:Books
Designing for the Social Web: Joshua Porter: 9780321534927: Amazon.com: Books
Designing Social Interfaces: Principles, Patterns, and Practices for Improving the User Experience UX
A Project Guide to UX Design: For user experience designers in the field or in the making