Following the Stanford online lecture series, Susskind and Friedman's new book introduces the reader to the field of quantum mechanics assuming little prior knowledge.  The book does take a mathematical approach, though it is relatively light, and introduces some substantial concepts and results.  It probably makes sense to read the book as well as watch the lectures but this book is self contained and approachable.  The writing style is engaging and the book has various exercises that can help the reader confirm their understanding.<br><br>The book starts by considering how to think about states of a system and measurement.  In particular ideas about intrinsic spin are more or less the starting point of discussing quantum mechanics.  This is a different track to most other introductory QM authors but the point is to introduce the most simple quantum mechanical Hilbert space, namely the space where spin vectors reside.  The author goes through things like Pauli Matrices and commutating operators.  The author discusses the postulates of quantum mechanics and results from Hermitian operators as well as the uncertainty principle.  The author introduces time dependent Schrödinger equation naturally by first looking at the eigenstate solutions and then the superposition.  The author then gets into the concept of entanglement.  Another concept that usually comes later in quantum mechanics but is introduced naturally in the book.  The basics of tensor products are considered and the authors work through canonical examples of entangled states and the uniqueness of them to quantum mechanics.  There are aspects of this part which can be challenging to follow but watching the lectures online can help the reader who might feel a bit lost.  The authors then discuss particle wave duality and the collapse of the wave function.  And finally the authors get to the harmonic oscillator and discuss ladder operators and the solutions to the harmonic oscillators with the Hermite polynomials.  This chapter I found more readable than most quantum mechanical texts so think they did a good job making intuitive a difficult set of ideas.<br><br>Quantum Mechanics- the theoretical minimum largely achieves its goals of introducing the reader to quantum mechanics when they have little background and are absent a teacher to guide them.  It still is a hard subject and this book uses more the simpler toy models than the typical arbitrary wavefunction.  I prefer Bowman Essential Quantum Mechanics as a first introduction to the subject which I think is at the same level but I do like this and am glad I read it to get a different flavor of the subject, challenging for the uninitiated, but readable.