This document provides an introduction to semantics, the study of meaning in language. It defines semantics as studying the meaning of morphemes, words, phrases and sentences. Meaning arises from the systematic link between linguistic forms and things in the world. It also discusses different aspects of meaning, including reference versus sense, denotation versus sense, and literal versus non-literal meaning. Sense is how the speaker thinks about an object, while reference is the actual object being referred to.