Hi and welcome.
1 - that book is not too bad at giving you a literary introduction to CMA. You are correct, you need to start classes somewhere if you really want to train.
2 - you can probably train ma bu from the book just fine for starters. If nothing else, you will build some stamina.
3 - Do you want to take classes?
4 - If so, please let us know where you are and someone can probably direct you to a school.
5 - Don't get 'sold' on CMA. You may not be in an area that has a decent CMA school much less a crappy school. Go with the best recommended school irregardless of style where you like the teacher and feel comfortable in.
Good luck and supply us with more info and we'll try to help.
oh...
6 - ignore the idjits, there are many.
"George never did wake up. And, even all that talking didn't make death any easier...at least not for us. Maybe, in the end, all you can really hope for is that your last thought is a nice one...even if it's just about the taste of a nice cold beer."
"If you find the right balance between desperation and fear you can make people believe anything"
"Is enlightenment even possible? Or, did I drive by it like a missed exit?"
It's simpler than you think.
I could be completely wrong"