Anyone ever heard of this site or used it? I've used it a couple of times to learn about stuff. In my experience with it it seems like a very informative and well presented/knowledgeable place to learn about things related to photography and digital imaging/processing. http://www.cambridgeincolour.com/tutorials.htm I intend to spend more time browsing their online tutorials, which come in textbook form, with a view to learning more from them. I strongly recommend this site for the novice/amateur. It explains things really well, and succinctly. I just realised this place has a forum and may be your competitors. Sorry if I am breaking the rules. I just think they are a very comprehensive source and wanted to share.