Contents: Electron-cyclotron resonance heating of toroidal plasmas. Lower-hybrid plasma heating in tokamaks. RF heating in the ion cyclotron frequency range. Alfven wave heating and current drive. Noninductive methods of current drive in tokamaks. Linear conversion of electromagnetic and plasma waves in a two-dimensional inhomogenous plasma. Nonlinear effects in RF plasma heating. Plasma diagnostic and toroidal systems using microwave radiation at frequencies close to electron cyclotron harmonics.