Fresh out of a class that covered use cases as part of its syllabus, I read this book for a deeper understanding. I found inconsistencies between the Use Case diagrams that I studied and those in this book. Read the other review on Amazon's website for more--I found that I wasn't alone in my confusion.
Formerly known as Caro's Book of Tells, this is a Cardoza Publishing print of the original book. Stage-by-stage photos for the tells and profitability/accuracy of reading tells are included for each tell. Photos are from the original book (1970's?), but the descriptions and "Caro's Laws of Tells" are very useful. Over 300 pages, but at least 50% of the content contains photos or MCU Poker Charts.