This document provides an introduction to prosodic morphology. It defines prosodic morphology as a theory that posits underlying morpheme representations as templates defined by prosodic units like feet and syllables. The principles of prosodic morphology state that morphological processes involving sound shape are defined by categories in the prosodic hierarchy. Examples are given of reduplication and truncation processes across languages that are explained by prosodic structure. The role of feet, minimal words, and how quantity sensitivity affects word structure are also discussed.