Canon & Nikon shooting modes explained
Photographing in Manual
Most helpful info- Steps to setting up in manual: First set white balance, second set ISO, then set aperture, and finally your shutter speed. 20 tips.
Landscape photography cheat sheet: step by step how to take the perfect landscape photo.
ISO settings. Clever for artsy people who forget
Free macro photography cheat sheet: drag and drop to save to your desktop
The Ultimate Pinterest Guide for Photographers by The Modern Tog http://www.TheModernTog.com (via @Jamie Swanson)
How to control the Aperture and Depth of Field
Understanding Photography and Color Temperature
Variables that affect exposure