A couple of folks have mentioned Strobist.com. There's a ton of information available there and in the Lighting 101 and Lighting 102 archives on that site.
Copyright © Nikonians 2000, 2014
All Rights Reserved
Nikonians®, NikoScope® and NikoniansAcademy™ are trademarks owned by Nikonians.org.
Nikon®, Nikonos® and Nikkor® are registered trademarks of Nikon Corporation.