Principles of Graphic Design
Great source of graphic design information including introduction to deign, color theory, perspective, typography and layout. Very valuable reading.

Affordable Stock Photography
High quality, low-cost stock photography for both print and web usage. Find lifestyle, nature, glamour, landscapes, backgrounds, beach scenics, editorial and other images.

Photoshop Tips & Tricks
Treatments of photos, type and color with Photoshop techniques.

Lynda.com
Graphic training, tips, tricks and methods.

Russell Brown Photoshop Tips
Great special effect techniques.

Cartridge World
Satisfying the Photographic World with all their image needs

Government Printing Office

Internet Marketing Strategy & Website Promotion
One-stop Internet Marketing center where you'll find a wealth of website marketing articles, seo strategies, webmaster resources and web marketing tools.