Usability & Universal Design
Section 508 requires that Federal agencies' electronic and information technology is accessible to people with disabilities. IT Accessibility & Workforce Division, in the U.S. General Services Administration's Office of Government-wide Policy, has been charged with the task of educating Federal employees and building the infrastructure necessary to support Section 508 implementation. Use this website, to build 508 compliant, accessible websites.
Section 508 Homepage: Electronic and Information Technology
Section 508 of the Rehabilitation Act requires access to electronic and information technology procured by Federal agencies. The Access Board developed accessibility standards for the various technologies covered by the law. These standards have been folded into the Federal government's procurement regulations. Use these standards to build 508 compliant websites.
Tips about usability, layout and design. Published by the U.S. Department of Health & Human Services.
User Interface Engineering
A consulting firm founded by Jared Spool, a well known user interface professional. The website includes papers about ui and usability testing, conferences and a blog.
useit.com: usable information technology
Jakob Nielsen's column on website usability.
Terrific tutorials about a wide range of topics including html, xhtml, CSS, XML, scripting, and more
Webmonkey: The Web Developers Resource
Resources for website developers including how-to guides, code libraries, server technologies and authoring resources.
Color and Design
There are a number of great sites that help you generate color schemes to use in web design including:
Design Pattern Library
Part of the Yahoo Developer Network. Includes shared code and information about solving design problems. Excellent for the new developer.
Bootstrap, from Twitter