The HCI Bibliography (Gary Perlman) - a comprehensive bibliography for Human-Computer Interaction.

ACM SIGCHI - Association for Computing Machinery Special Interest Group on Computer-Human Interaction - the premier organization for HCI and usability professionals and researchers.

Usability Professionals' Association - another organization aimed primarily at practitioners

Usability Special Interest Group - Society for Technical Communication

http://www.usabilityfirst.com/index.txl - Usability First, a organization for web usability design.

http://www.poynterextra.org/eyetrack2004/index.htm - EyeTrack III，通过观察眼睛阅读顺序来帮助设计界面布局。

http://www.microsoft.com/usability/default.htm - Microsoft Usability Home Page

http://www.msdn.microsoft.com/library/default.asp?url=/nhp/default.asp?contentid=28000443 - MSDN User Interface Design and Development

Web Style Guide

Interface Hall of Shame - another good collection focusing on user interfaces.

Heuristic Evaluation (Jakob Nielsen) - general guidelines for usability inspections.

The Usability Methods Toolbox - nice survey of many usability methods.

Usability Net - methods, resources and standards for usability and user centered design.

Usability.gov - Provided by the National Cancer Institute, it is a resource for designing useful, usable, and accessible websites.

Hotwired: Webmonkey

CNET: Builder.com

RetroAccess - an automated HTML validation and correction tool to test for Federal and W3C accessibility standards compliance.

Bobby - an HTML validation program designed to test accessibility and highlight nonstandard and incorrect code.

DO-IT - a collection of resources, including links to internet sources for accessible web design.

The Trace Research and Development Center - provides resources for the design of accessible web pages.

CyberAtlas - a comprehensive reference for web marketing and demographics.

GVU Center's WWW User Surveys - annual surveys of web users shows interesting trends in user habits, preferences, and environment.

Web Marketing Information Center - a large collection of articles pertaining to web marketing.

User Interface Software Tools (Brad Myers) - a collection of commercial and academic user interface management systems.

User Centered Design Methodology and Tools - provides a nice background of user-centered design including evaluation methods, design techniques, and a bibliography of resources.

HCI Index (Hans de Graaff) - one of the originals and still one of the best.

HCI Resources: Guidelines, styleguides, standards - links to HCI guidelines.

Usable Web (Keith Instone) - a large collection of website usability and HCI links.