I think I am going to go with the Ben Earl video and the Andrew Wimhurst DVD.
I DONT RECOMMEND ANY oF THEM FOR YOU.
Here is the idea:
Ben Erl's DVD is, effects-wise, bad compared to others ( one mental poker deal thats needs a full deck stack, for an effect that surely doesn't represent anything done at the table ). There are good ideas for known sleights, but thats it really. Simply, not a good start.
Wimhurst's DVD is excellent, but its advanced. I don't recommend it unless you know your way round deck ( knowledge of false dealing, stacking, table faro, and culling is assumed ).
The BEST gambling demo if you're starting out is the Marlo/Gardner Poker Deal. It allows you to demo pseudo-stacking and true bottom dealing. The thing is, it doesn't matter if you're bottoms are average because you are just demonstrating it.
I recommend Simon Aronson's version in his book the Aronson Approach. It will get you into mem. deck work too ( other chapters in the book ), and many excellent effects. Highly recommended.
Look into Card College vol.5, has many four ace effects as well as many other effects. The series, of course, are no brainer, one of best bang for buck you'll find.
@Morgician, if I recall correctly Guy's routine needs false shuffles and false dealing, no? :s