I don't want to derail this thread too much getting into theory. Perhaps we should make a new thread, Mike? I will say this, though:
I prefer books and I understand that some people prefer videos. Personally, I think videos cannot convey enough information. Restricting oneself to one or the other is a mistake. Take all the information and distill it into the best show you can possibly create.
But, and I believe this completely, the ONLY way to become a good performer is to get out in front of audiences and perform. No amount of academic knowledge will be enough until you get on stage (whatever your stage is) and actually DO it. I cannot count how many times I thought I had something amazing which bombed upon the first performance.
To that end, and to wrestle this post back to the subject of this thread, don't worry about learning a huge amount of tricks. Learn some principles and use those, coupled with the ability to control an audience and create a miracle out of anything, and you'll never need to learn new tricks. A force, a control to the top, a control to the bottom, two palms (I use gambler's cop and the classic palm), a peek, and a variety of false shuffles and cuts. That is literally all you need to know sleight-wise. You can create endless tricks with these simple sleights and a knowledge of routining.
More importantly than learning tricks, learn to create magical moments from anything. Don't focus on tricks.
"Is it magical, or merely impossible?"