Introduction to Quantum Mechanics, along with Griffiths’ other magnificent piece: Introduction to Electrodynamics; together, are two of the best undergraduate textbooks available.<br><br>Professor Griffiths’ approach in this one is pretty mathematical, though he doesn’t ever sacrifice conceptual reasoning for mathematical sophistication. Everything he says is perpetuated with concise explanations and purpose. What I find most remarkable is how Griffiths’ seems to know the reader personally; offering derivations or further explanation at the perfect time. The problem sets are not easy, for the most part. There is hardly any hand-holding, and solutions to the problems (written by Griffiths himself) are available online as PDFs.<br><br>As the third edition of this text, it is very modern. There is no worry of stumbling across outdated information. The overall visual presentation is pretty standard, but clean. The diagrams are always very helpful. The one (albeit minor) complaint I have is the deficit of example problems. There is usually only one per section, and I think some sections could certainly use more. Regardless, I would recommend this book to anyone with a foundation of multivariable calculus, some DE, and— of course— the classical mechanics prerequisite. It would probably be a good idea to know your vector calculus as well as electrodynamics.