This document provides an introduction to economics, covering what economics is, the relevance of economics, demand and supply, and case studies. It defines economics as the study of how economies operate and the decisions made by governments, businesses, and individuals. Microeconomics looks at supply and demand and their impact on consumer behavior and business decisions, while macroeconomics examines entire countries and factors like economic growth. Economics is relevant to areas like central bank policy, business management practices, and pricing and competition strategies. Demand and supply are fundamental economic principles that drive business decisions. The case studies section discusses applications to Africa related to policy, development, and trade, as well as business focuses on demand/supply and pricing models.