This document provides an introduction to the topics that will be covered in a course on linguistics. It discusses definitions of language and what it means to know a language. It describes the key components of grammar, including the sound system, word structures, sentence patterns, and relationships between sounds and meanings. It distinguishes between linguistic competence and performance. It also introduces the concept of universal grammar and lists several types of grammars, briefly describing descriptive, pedagogical, prescriptive, reference, theoretical, and traditional grammars. The first unit discusses theories about the origins of language and the second unit provides an overview of the development of writing systems.