The people that are giving testimonials on the Qigong video tape, did they all learn straight from Mr. Lin?

What are the comparative success rates with the homestudy course as opposed to the live class? I know, you can't really give me an exact number, but from the telephone conversations, the e-mails and letters you have received, I'm sure you could form a rough estimate. And comparitively, how much longer should it take to see significant, tangible results? Again, a rough estimate would do just fine. (i.e., I would most appreciate it if you gave more than the usual, "it depends on the individual." And don't say that just because I said don't say it. Please. )

Thanks. (Please)