Quantum Mechanics: Concepts and Applications is a comprehensive textbook that covers the principles and applications of quantum mechanics. Written by Nouredine Zettili, a renowned physicist and educator, this book provides a thorough introduction to the mathematical formalism and conceptual foundations of quantum mechanics. With numerous examples, exercises, and illustrations, Zettili guides readers through the intricacies of quantum theory and its practical applications in various fields, such as atomic and molecular physics, solid-state physics, and quantum information science.