I would recommend getting Mr England's superb Foundations DVDs, Erdnase (of course), and, if your budget can stretch to it, Richard Turner's The Cheat DVD.
The first of these will give you excellent in depth teaching on moves which will really help build your confidence and open your eyes to the small subtleties of handling that change an OK sleight into an invisible move.
The second is essential reading for all magicians, and it's free, so there's no excuse. The Expert at the Card Table is something you'll return to over and over again throughout the years, always learning something new.
The third, while not the most effective teaching tool, really helped me realise just how far card artifice could be taken. Richard demonstrates a whole host of cheating techniques, and will inspire you to push yourself to your limits to master the craft.