Not the best way to spend your time…
Not the best way to spend your time actually. It seems to be a very mediocre academy and books aren't worth your attention guys. There are way better courses and platforms where this sphere and knowledge about it can be obtained more effectively and faster. I still do not understand how such guys exist and why others blindly believe them. I urge you to check everything twice before just getting into dubious activity, sometimes this decision may have very bad consequences.