Peace good sir
I agree, there's only so much that can be conveyed in a book and given that English isn't his first language it becomes quite difficult to explain complex concepts.
The microcosmic orbit is what attracted me in the first place. I discovered that semen retention wasn't healthy, it was creating a lot of heat in my body. At the same time I didn't want to ejaculate frequently and lose jing, which is when I discovered Mantak's work. I solely practice the microcosmic orbit, the cool draw and love making without ejaculation (using the PC muscle to control it).