BetterPhoto.com
The best photography site on the Web! Take fantastic online photo classes with world-class professional photographers, unite with fellow photography enthusiasts, or create a beautiful personal Web site like this.

Digital Photography Review
Here you will find all the latest digital photography and imaging news, reviews of the latest digital cameras and accessories, the most active discussion forums, a large selection of sample galleries, a digital camera database and buyers guide and the most comprehensive database of digital camera features and specifications.

DIYPhotography.net
Photography and Studio Lighting. A great place for photographers to share and learn from each other.

Flash Photography with Canon EOS cameras
Get the control of your EX Flash System

Nikon Creative Lighting System
Practical use of the Nikon SB800 Speedlight

Strobist
A blog on Lighting