DSLRUsers.com

Found this gem while researching techniques for my first wedding shoot. Hope it helps you guys as much as it helped me

http://photonotes.org/articles/eos-flash/

I found this about two months ago, man it's helpful, if a little difficult to wade through, but good, particularly in getting to understand how the flash and the camera settings combine so you can get consistent results. Good post, any EOS flash users shouldn't be without this one.