Got a copy of the free ebook in exchange for this review:
This is a book compiled by OP, and is offered for free upon request. It covers a simple and useful way of using non competitive keywords in your website (including good and bad indications for whether a keyword is worth going after). This is something that you should definitely think about when doing your keyword research.
The fact it was compiled, rather than written by OP, doesn't take away from the value in it. And being offered for everyone for free, it really is a no brainer.
I want to add that OP could easily rewrite it and change bits of the process to take credit for it, but chose to credit the original creator, and I really appericiate him for that.