I have been interested in gambling expose' style magic since I began to seriously study card magic. I soaked up what I could of Erdnase and Expert Card Technique, watched videos of some of the greats, from Ackerman, to Forte, to Ortiz, yet for all the excellence of those resources I found much of the material frustrating. Then I came across the Foundations series of DVDs and downloads and started making "breakthroughs." Foundations is designed for "first timers." Not beginner card magicians per se, but card magicians who are venturing into serious gambling sleights for the first time. Since going through this series I have now been able to go back to the books and DVDs I previously mentioned and get more out of them.
Read a full review that covers the majority of the downloads in the series...http://www.custom-playing-card.com/foundations.html