Just purchased this book without discount. I really hoped will find some useful info there, but I must say that I'm disappointed.
Here is my personal opinion:
It's more like your own research you put in pdf, with few informations about every type of websites you mentioned, also based on this I would say you have to learn much more to do more quality reverse-engineering.
For noob want to start with spam and he never did anything similar before could be ok for start. But would recommend to add more ahrefs screnshots and explanation so they can really learn for price they pay to you.
For someone that already know how spam works and this type of websites its totally useless.