This is an interesting book about the theory behind solo rpgs, why to play them, and some author tips to make running a solo game easier. The claim that there are 70+ pages of essential tables is a bit misleading. There may be 70+ pages with tables on them (I did not go through and count) but they are scattered throughout the book randomly and are often small, half page sized tables that are used as an example of the topic of the previous paragraph. Again, not bad tables, but far from the claim of 70+ pages of essential tables. You will be hard pressed to remember what tables are in the book or be able to find them easily, since they are so scattered.
This is a great book for people who want to read about solo roleplaying or who are trying to figure out how to do solo roleplaying better.
This is not a great book for actually solo roleplaying. I honestly feel a bit misled about the contents of the book based on the description. Again, not a bad book, but not at all what it was marketed as.