Almost all of those websites are the same Ebook repackaged, and they are completely useless. Don't waste your money on them, you can find the same information on the internet for free. It'll just be simple information about monetization and what clicks earn the most money.
https://www.google.com/adsense/
Signup is there just fill in as instructed nice and easy. Youll need to build sites onto the domains you cant just havea parking page.
What id suggest is just go look a round this forum and earnersforum.com I seem to remeber being quite good, just search the internet and read as much as you can, do NOT pay for anything such as that link.
Adsense is easy to make money from, it just takes time
