Pragmatics is the study of language use and its object is meaning in use. The main hypothesis of contemporary pragmatics is that semantic interpretation is underspecified and must be enriched at the pragmatic stage. In this section, I will first give a brief survey of what pragmatics is and is not, and the types of pragmatic theories available on the scientific market (Section 4.1). Then (Section 4.2), I will discuss more precisely the semantics-pragmatics interface, with a special focus on the possible border between semantic and pragmatic meanings. Inference will be the third topic (Section 4.3) and I will conclude this introduction by a crash course on Relevance Theory (Section 4.4), one of most complete pragmatic theories today.