In this ultimate practical introduction to quantum mechanics, world-renowned physicist Leonard Susskind and data engineer Art Friedman give you the basic skills you need to tackle this topic yourself. They provide clear, lively explanations of basic concepts, introduce the key fields of quantum mechanics and include step-by-step exercises. Making a complex subject 'as simple as possible, but no simpler', this is a practical toolkit for amateur scientists that you won't find anywhere else. 'Quantum mechanics for real. This is the good stuff, the most mysterious aspects of how reality works, set out with crystalline clarity. The place to start.' Sean Carroll, physicist, California Institute of Technology, author of The Particle at the End of the Universe