This document provides an introduction to the field of linguistics. It defines linguistics as the scientific study of language, analyzing how sounds and meanings are related in human language. The main goals of linguistics are to describe languages, explain people's unconscious knowledge of language, and uncover general principles underlying all human language. Linguistics differs from traditional grammar in that it describes languages based on their own merits rather than imposing categories from other languages, and regards spoken language as primary. Studying linguistics can help language students and teachers better understand language at all levels, from sounds to its relation to the mind, brain, society and more. The scope of linguistics includes subfields that analyze language at both the micro and macro levels.