This is a very useful reference for Amazon authors. While the secrets are not particularly weird (or, for that matter, particularly secret), you don’t often find them all nicely bundled into one place, and Shaun Hibbs isn’t pushing any products.
It can be applied to revitalize the track record of an existing book or to help the launch of a new book;perhaps the most profound observation is to consider writing the online book description first and then making the book fulfill that commitment, thereby keeping its focus on what the reader wanted to get out of it instead of diving down into irrelevant rabbit-holes.
The book provides a fairly thorough description of how to go about setting a book up for success on the Amazon platform, with step-by-step instructions for key activities such as identifying current on-line search trends and hints when going through the Amazon publishing steps. Those instructions, where they apply to automated tasks, are in some cases better than those offered by the makers of the tools.
If you learn nothing else, the fact that Amazon only offers you about 40% of their actual categories, and the explanation of how to get at the rest which may be better sellers for your particular book, are worth the price of admission.
Shaun is not flogging any product, and some of the tools he points out are free, but I will say that KDP Rocket (which I do own) is an indispensable way of doing in minutes the tasks described here that would otherwise take many hours to accomplish yourself.