This document provides an overview of sociology and its key theoretical perspectives from a structural functionalist viewpoint. It discusses what sociology is, how sociologists study society, and the origins and main thinkers of structural functionalism. Structural functionalism views society as a system of interconnected structures and institutions that work together to ensure stability. It emphasizes that each part of society has a function and any dysfunction can lead to change. The document outlines the principles of structural functionalism and discusses offshoots like the work of Parsons and Merton as well as common criticisms of the perspective.