There are lots of articles on lighting out there. (I've written one or two myself, but I'll spare you.) One of the best places to learn something that I've seen is the site for Scott Spears, director of photography for many projects including the recently released DVD feature
Horrors of War.
http://www.scottspears.netAlso, Peter John Ross, writer, director, editor, and regular columnist
does he eat his bran flakes every day? has articles and tutorials on lighting on his site.
http://www.sonnyboo.comCheers!
Al B.