Nikon D3200 low light photography tips (covers iso, f-stop, aperture, and exposure) - this site has a ton of easy to follow step by steps for DSLR cameras.
10 Steps to Better Photos
Camera #Metering Modes Cheat Sheet #photo
5 Easy Steps to Shooting in Manual Mode
Learning about how to get your exposure right is at the heart of good photography. As a result we’ve written on the topic numerous times (see links below) to help our readers get their heads around it. Those elements are ISO, Aperture and Shutter Speed. Often referred to as The Exposure Triangle – 3 elements …
Online photography classes - The Bump
Shutter Speed: an overview. Excellent reference point. Print and shove in your camera bag.