This document provides an introduction to consumer behavior. It defines consumer behavior as the actions and decision-making processes of individuals who purchase goods and services for personal use. It also defines a customer as someone who purchases products, while a consumer is the end user of goods and services. The document discusses the nature and characteristics of Indian consumers, noting they are a heterogeneous group with a young demographic, aspirational nature, value consciousness, and diversity in religion, dress, food, and more. It also outlines factors that influence consumer behavior like personality, motivation, family, culture and advertising.