Usability Resources
Web Sites
Usability.gov. The National Cancer Institute's studies of usability of Web sites. A very interesting discussion of how their Web pages evolved.
The National Cancer Institute's (NCI) Research-based Web Design and Usability Guidelines. The guidelines summarize results of user observations that contributed to the improved usability of the NCI's Web sites.
Making Your Web Site Senior-Friendly, from the National Library of Medicine.
Usability Professionals Association. Also visit their Usability Resources section. The Washington DC Chapter has monthly programs in the area.
The Alertbox: Current Issues in Web Usability, articles by Jakob Nielsen. Always interesting, and occasionally entertaining.
The Society for Technical Communication's Usability Special Interest Group's Topics in Usability.
Sofware Usability Research Lab, U-Kansas Wichita
Examining User Expectations of the Location of Web Objects, Michael L. Bernard
Universal Usability, Sarah Horton
Towson State University's Universal Usability Lab
Books
Don't Make Me Think, "A Common Sense Approach to Web Usability". Steve Krug. © 2000. ISBN-0-7897-2310-7. A short book that covers the basics.
A Practical Guide to Usability Testing. Joseph S. Dumas and Janice C. Redish. © 1999. ISBN 1-84150-020-8.
Shaping Web Usability: Interaction Design in Context. Albert N. Badre. Addison-Wesley. © 2002, Pearson Education, Inc. ISBN 0-201-72993-8.
Web Usability & Navigation, A Beginner's Guide. Merlyn Holmes. McGraw-Hill/Osborne. © 2002, The McGraw-Hill Companies. ISBN 0-07-219261-5. A fairly decent book that covers a lot of ground.