A lot of rubber band effects seem to be scattered around different DVD's. You could get Calen Morelli's Transit (which may or may not be too much for a beginner in rubber band magic...hopefully someone who does Transit can chime in here), Marcus Eddie's Stairway, Chris Kenner's Missing Link, and Alex Pandrea's LINX as instant downloads here on T11. Crazy Mans Hand Cuffs is a classic rubber band effect that can be gotten as an instant download on penguin. Also, I believe Dan Harlan has a [somewhat older] DVD called Band Shark that is solely rubber band magic which can also be gotten at penguin.
Oh, and just an FYI, when you go buy rubber bands, the ideal size is #19 [dimension 3-1/2 x 1/16]. Also, try to get them latex-free...they stretch WAY more than a normal rubber band which, in turn, makes them WAY easier to work with. I also think that in rubber band magic, bright colored bands is the way to go...IMO, stay away from the tan colored bands. I have some and hate them. Let me know if you need help finding latex-free bands!