Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Read somthing else.

This book is by far the worst treatment of quantum mechanics I have ever laid eyes on. If you really want to learn, check out the book by "Introduction to Quantum Mechanics" David Grifiths or "Principles of Quantum Mechanics" R. Shankar(my favorite). Oddly enough, there are far more mistakes in the third edition of Gasiorowicz than the second.... it is garbage.