We'll the best source for learning cardistry that I found is this thread at decknique. http://decknique.net/forums/thread:4916 It has everything from what cards to use, to practice tips, what to get, etc.
Daniel dosen't need to peak a card. He has photographic memory. And I doubt that Derren Brown will ever come here. He makes too much money and choose the best kind of magic carrer. T.V magic. Why would he want to sell products to kids on this site who at first get hyped up and start praising...