This document introduces some key concepts in media semiotics, including signs, signifiers, signifieds, denotation and connotation. It explains that semiotics examines how meaning is constructed and understood through symbolic and technical signs. A signifier is the form that a sign takes, like an image or color, while the signified is the concept or meaning it represents. Signifiers can have both denotative (surface) meanings and connotative (deeper) associations that depend on culture and context. The document uses examples to illustrate these concepts and asks readers to analyze signs and their meanings in different media texts.