We begin with essential resources: the Yale Web Style Guide and valuable advice from Jakob Nielsen of UseIt.com. In 1998, the New York Times called Nielsen the ìguru of Web usability.
Essential Resources
Especially for Nonprofits: Services and Information Portals about Web Sites
Services
Information Portals
Design Guidelines and Tutorials
HTML Help: Free Online Tutorials
These sites are all recommended by the National Center for Supercomputing Applications at the University of Illinois.