This document provides an introduction to microeconomics. It defines microeconomics as the study of individual economic units such as consumers and producers and their behavior. The document then discusses three key questions of microeconomics: what goods and services are produced, how they are produced, and for whom they are produced. It explains that economics studies how individuals and societies make choices with scarce resources. Goods and services are produced using factors of production like land, labor, capital and entrepreneurship. Microeconomics seeks to understand how prices of goods and services are determined through the interaction of supply and demand, and how prices of factors of production like wages and profits are determined.