This document provides an overview of semiotic analysis and key concepts from Ferdinand de Saussure's theory of signs. It explains that a sign is composed of a signifier (the form that the sign takes) and signified (the concept it represents). Meaning comes from how signs are differentiated within a system. Charles Sanders Peirce identified three types of signs: icons which resemble the object, indexes which are causally connected, and symbols which are arbitrarily defined by convention. Semiotic analysis can help determine the meaning of visual art by examining how formal elements and contextual factors contribute to what a work signifies.