Textbook in PDF format.

This textbook on quantum mechanics has been designed for use in two-semester undergraduate courses. It describes the basic concepts of quantum mechanics, explains the use of the mathematical formalism and provides illustrative examples of both concepts and methods. Although the aim is to enable students to master the use of quantum mechanics as a tool, the author also discusses the meaning of quantum concepts. To this end the book contains a variety of relevant examples, worked out in considerable detail, as well as a substantial number of pertinent problems and exercises. The latter will be extremely helpful, if not essential, for gaining a deep understanding and command of the subject. This book is based on the author's thirty years experience of teaching the subject.
Table of contents 
Introduction
The Schroedinger Equation
Some Simple Systems
Physical Observables as Operators
Basic Principles of Quantum Mechanics
Time Evolution
Some More Simple Systems
Angular Momentum
Eigenstates of the Angular Momentum
Spin
Addition of Angular Momenta
Motion in Three Dimensions
Central Potentials
Systems of Particles
Atoms
Molecules
Particle Interactions with EM Fields
Approximation Methods
Symmetries
Scattering
Quantum Behavior
Quantization of EM Fields
Matter–Radiation Interaction
The Path Integral Formulation of QM