No Problem ... sounds good to me,
Sounds as if you have a firm grounding which makes life easier ... glad to here you got your Derren Brown Video, i heard that its becomming tougher and tougher to get a copy of it.
I personaly use DVD to learn as well as the odd book, I'm not sure what level you are at, this reccomendation might be a little below you, but we make a habbit of reccomending it to any one getting into cards and that is "Oz Pearlman's, Born to Perform Card Magic" availble from
www.penguinmagic.com
There is a bunch of stuff in the cards section on that site, anything from Oz is worth looking into, also stuff from Jay Sankey wouldnt be a bad investment.
Have fun,
Rob