24.900 Introduction to Linguistics (Spring 2022, MIT OCW). Instructor: Prof. Norvin W. Richards. This class will provide some answers to basic questions about the nature of human language. Throughout the course, we will be examining a number of ways in which human language is a complex but law-governed mental system. Much of the class will be devoted to studying some core aspects of this system in detail; we will also spend individual classes discussing a number of other issues, including how language is acquired, how languages change over time, language endangerment, and others.
(from ocw.mit.edu)