There are a lot of resources available to help you learn about web site accessibility and begin making simple changes to your own site. These links will help you get started …
Alliance for Technology Access (ATA) is a national network that offers informational articles about designing and understanding web accessible web sites.
Color Matters offers all sorts of insights into how color affects us.
Jim Thatcher’s web site offers an easy-to-understand tutorial on Section 508 Standards that was written for the Information Technology Technical Assistance and Training Center.
KEYNOTE NetMechanic offers information and resources for making your web site more accessible.