This is the most terrific book to read and to study. The Preface author [guru Dr. Alexander Elder] suggests that the book will need to be slowly digested, because their really is a lot of good, sound knowledge to be gleaned from the book author David Weis. He tells you to expect to go slow. Heck, I planned to race right through it. NOT.

https://www.amazon.com/Trades-About-Happen-Adaptation-Wyckoff/dp/0470487801