The course isn't so much a course as it is information. And that you'll get via email.
Personally, I've put off creating an email list for a very long time. But, it offers the opportunity for slightly more interaction than a simple website. And if you don't want that kind of interaction, no worries, you don't have to sign up.
When I teach muscle control in my classes I can generally see when my students get it or don't. And I can modify my instructions to suit. I won't be teaching you muscle control in this course (I've other courses for that), but I will be talking about the principles behind it, the theory that will allow you to apply muscle control a little bit more intelligently.
There will be some trial and error (in that regard it's a lot like learning to program) but the idea of having principles is to make it easier to learn from the errors.
Anyway, with email, you can always ask me questions. I can answer those questions and in the process learn the challenges you may have with understanding muscle control, and even why you might want to learn it. (And of course, lots of people have gotten by without it, sort of like the way we got by with regular phones for ages before smart phones came along).
And that might be a good analogy for why I teach muscle control. It can make you smarter in how you use your body.