Bonsai again

Through my traversing on the world wide web I came across a site called youtube. This guy named Charles has a great video there on how to start a bonsai from a Juniper bought at the garden center.

It was great because it made me feel like it would be possible to start my own bonsai. I would rather not start from a pre-made bonsai. It would be more enjoyable for me if I got to create it myself. I can't start from a seed though or I'll spend the next 3-5 years just growing the thing to a reasonable size to do anything with it. But a garden center Juniper probably only costs about $20, which ain't too bad. By the looks of this guy's video (which is in 3 parts) I could probably take one of those and get it ready for bonsai training in an afternoon.
Now of course if you read this guy's profile you learn pretty quickly that he has been doing this for 20 years, so he has an idea of what he is doing. I do not. Also, I can't use a Juniper. As mentioned before, my wife and I live in an apartment on campus. I can't grow outside bonsai. But still the thought that I can start a bonsai with a $20 plant from the garden center is very exciting for me.
Hopefully I can find a nice Ficus benjamina for $20 that I can start training right away.