Plasma physics is one of the most vibrant research fields in modern physics. The majority of the visible universe exists in the form of plasmas. Here on Earth, one of the most ambitious goals is to harness energy from controlled nuclear fusion. Robert Goldston and Paul Rutherford both conduct research at the Plasma Physics Laboratory of Princeton University, one of the world's leading institutes in plasma physics. In this textbook for physics and engineering students after their preliminary diploma, they present the material in a pedagogically effective manner. Numerous exercises are provided for learning assessment.