Sebastian reminded me about sportsshooter.com which I hadn't checked out for awhile. I found this tutorial and thought it was pretty interesting - being a novice when it comes to lighting. It's several short quicktime movies, about 1-2 minutes each. Hope you've got broadband!

http://www.sportsshooter.com/special_feature/2003_luau_video/5_min_light/index.html