The Top 5% of Web Sites!
An entertaining look at truly bad emphasis techniques
http://www.davesite.com/humor/top5/

Hot Design Tips
Outstanding tips for creating and presenting text effectively on a website
http://hotwired.lycos.com/webmonkey/98/34/index1a_page2.html?tw=design

Duke University's Center for Instructional Technology
Tutorial: Web and Interactive Media Design "Design Basic: Using Color"
http://cit.duke.edu/resource-guides/tutorial-web-design/11-design-color.html

Duke University's Center for Instructional Technology
Tutorial: Web and Interactive Media Design
"The Computer Medium: Font Availability"
http://cit.duke.edu/resource-guides/tutorial-web-design/06-medium-font-availability.html

Duke University's Center for Instructional Technology
The Computer Medium: Font Sizing
http://cit.duke.edu/resource-guides/tutorial-web-design/07-medium-font-sizing.html

Commercial Fonts
http://desktoppub.about.com/cs/commercialfonts/

Colorwheel Fact Sheet
For non-art types, this is easily understood
http://www.artfaces.com/artkids/wheel.htm

Color Psychology
A very helpful introduction from About.com into how humans relate to colors
http://psychology.about.com/blsub_soimg_color.htm

Color Association of the United States
In existence since 1915, it studies color trends and consults with businesses
http://www.colorassociation.com/