This document provides an overview of postmodernism and related concepts. It defines postmodernity as a historical period beginning in the 1960s, and postmodernism as both a style in culture and thought. Postmodernism emerged from modernism and is characterized by deconstructing concepts like truth, language, history and reality. A key aspect is metafiction, which draws attention to itself as an artifact and examines the relationship between fiction and reality. Historiographic metafiction further blurs the lines between fiction and history.