Purpose and context

The solutions manual provides step-by-step mathematical derivations and conceptual explanations for every problem in the textbook. Key chapters covered include:  The Wave Function (Chapter 1) Time-Independent Schrödinger Equation (Chapter 2) Formalism (Chapter 3) Quantum Mechanics in 3D (Chapter 4)

is almost as famous as the book itself. Griffiths designed his textbook to be incomplete without the problems; he intentionally "hand-waves" certain results in the text, only for students to realize they must derive them in the end-of-chapter exercises.

Quantum mechanics is beautiful. Griffiths’ textbook is a masterpiece. The solutions are simply the map – you still have to walk the path yourself.

Quantum Mechanics in 3D: Hydrogen atom and angular momentum.