There is a rich zoo of waves that can propagate in
plasmas over a wide range of conditions. These waves can be
electromagnetic or electrostatic, as well as linear and nonlinear. Waves
can be driven in plasmas by sources of free energy as instabilities, or
driven for the purpose of heating, enhancing confinement, or diagnosing
plasmas, to name a few. For these reasons, waves are an important topic
in plasma physics. This presentation will introduce some of the key
concept for waves in plasmas.