Jeff Hwang has worked very hard on this book. It is evident in the amount of detail he provides in the descriptions of the cards throughout. He spent the time to provide the names of many of the best players at the time he was writing (2012) and details about all the key cards for those players with regards to pricing and a comparison between the numbered cards and the base card from the same sets.
The basic premise behind the book is the bigger fool theory. If you buy the best card of the best player in the best condition, regardless of the market price today, you will be able to sell it at a higher price later because there is always someone out there (the bigger fool) who wants it more than you do. There is always a market for the very best. So the most important thing is to know which cards are the best and target those. After establishing that premise, the book goes into great detail about many individual players and their key cards. Most of the key cards from the modern sets are either Bowman Chrome to Topps Chrome cards. The book gives describes the different cards in those sets (chrome, refractors, superfractors, autos, etc.) to show the difference in pricing power based on the quality and quantity available of those cards.
The later chapters of the book discuss different methods of acquiring cards for investment, such as case breaks, which seem to be the most popular method right now. Hwang advises against buying individual packs, and, most of the time, boxes, from large retail stores where packs can be purchased, searched, and returned to be resold. It is disheartening to me, as a collector, to read this part of the book because he does go into some detail about how investors are basically making it nearly impossible for collectors to find the best cards. As an investor, I understand the reasoning, but as a collector, I find it a little unfair.
If you want to be a serious investor and make money in a card market that isn’t booming the way it was in the late 80s, then this is a great book for you and I highly recommend it, because the information can be invaluable. However, it is primarily for investors who have thousands of dollars to invest, so I don’t think it would be useful to a collector who wants to go to a card shop or online and spend less than $100.