Through, that one is more advanced and about how to be skilled manipulator and sleezy.
idk how much time you have spent being deliberately manipulative, but unfortunately i have in my earlier years. unless you are naturally this way, it takes a lot of work in the moment and people are not usually fooled.
I did not tried manipulate people much and hate a lot when people try to manipulate me. People in the past did that to me. Hence my distaste with the book.