I purchased this book in the hope of learning something more about the concepts of quantum mechanics. I had hoped the book would allow me to understand the theory better. After reading through the entire book, though, I can only say I am even more confused than when I began. The author does a miserable job at explaining the concepts of the theory. His explanations are confusing and inadequate. The math he uses does not help. He skips many math steps making it impossible to know how he is arriving at his conclusions. I would not reccomend this book to anyone.