Tips: Twelve Essential Photographic Rules

What happens when your systems go belly-up, when all of that cutting-edge technology dies and you must rely on (gasp!) your own knowledge? It pays to have these basics in your head. They can get you out of a jam and help you get good shots when nothing else will.

Highly recommended. Includes depth-of-field, exposure and camera shake rules.
Read all the tips here ... Popular Photography PopPhoto.com [via Photojojo]