This document provides an overview of semiotics and several key theorists in the field. [1] It defines semiotics as the study of signs and symbols and how they are used to communicate and develop interpretations. [2] It discusses Ferdinand de Saussure's distinction between the signifier (physical form of the sign) and signified (what it represents). [3] It also covers theorists Roland Barthes, Stuart Hall, and their contributions around how signs represent cultures/ideologies and how audiences interpret media messages.