Nouredine Zettili's "Quantum Mechanics: Concepts and Applications" is praised for its extensive collection of fully solved problems, making it a valuable resource for students needing practice with calculations. The book is available in paperback and offers complete derivation steps, which aids in understanding complex calculations. However, it has notable drawbacks, including insufficient explanations of key physical phenomena, such as the Ehrenfest Theorem, and a lack of clarity in certain topics like Time-dependent Perturbation Theory and the Quantization of the Electromagnetic field. Additionally, it does not cover Relativistic Quantum Mechanics, and the chapter on Many Particle Quantum Mechanics is considered too brief. While the book is economically accessible as a free PDF, its effectiveness for learning quantum mechanics is questioned, as it often requires prior knowledge from other sources to fully grasp the material. Overall, it serves better as a supplementary tool for problem-solving rather than a primary learning text.