This book was quite readable and interesting to someone with a strong math background and little physics background. However, it is more of an introduction to the mathematical foundations of quantum mechanics rather than an introduction to quantum mechanics itself. Lots of discussion about how concepts of entanglement and the behaviour of the spin operator are "weird," but to the intended reader its not weird because there is zero discussion of how the ideas correspond to observed phenomenon. Not a single experiment mentioned in the book, if I remember correctly. So its just a mathematical playbook, which will give a good foundation for further study. Exercises are minimal. Some are excessively tedious, and others are so trivial that they fail to illustrate the concepts (ie. nearly all coefficients come out to zero or 1)