It's a great book. The abundance of examples are wonderful. I don't understand why more authors don't take this approach.<br><br>One negative of the book is the notation. Why in the world would you write a vector as a letter with an arrow instead of bold? Along with hats on operators and a refusal to use notation such as the Levi-Cevita symbol to define the commutation relations, or |+&gt; and |-&gt; for spin states. When you get to the section for addition of angular momentum, you just get buried in the notation. Even well after I was fluent in the content, I still find the section difficult to read.