Basic Matters is a first introduction to quantum mechanics that does not assume any prior knowledge of the subject. The emphasis is on the general structure as the necessary foundation of any understanding. Starting from the simplest quantum phenomenon, the Stern?Gerlach experiment with its choice between two discrete outcomes, and ending with one-dimensional continuous systems, the physical concepts and notions as well as the mathematical formalism of quantum mechanics are developed in successive, manageable steps. The presentation is modern inasmuch as the natural language of the trade ? Dirac's kets and bras and so on ? is introduced early, and the temporal evolution is dealt with in a picture-free manner, with Schr?dinger's and Heisenberg's equations of motion side by side and on equal footing.