Hi Alex:
My english or self expression is not perfect. But I look at the tape course as more of a personal trainer. A personal trainer talks to you in the gym and says do this. Wereas the book is synonomous with the picture manual in the gym.
Being that we all are or most of us are creatures of habit. We would more likely benefit from the tape course. But the drawback of a tape course is that it can be 10 times more expensive than the book.
You can say the same thing about hiring a personal trainer.
Parag
