This course develops Austrian economics from its foundations in purposeful human action, subjective value, scarcity, choice, and voluntary exchange. It explains how marginal utility, supply and demand, time preference, and monetary calculation shape consumer prices, wages, interest, producer-good values, profits, and capital allocation. The analysis then follows income, saving, investment, bonds, stocks, money, banking, and the multi-stage capital structure to show how entrepreneurs coordinate production under uncertainty. Later lessons distinguish ordinary market fluctuations from credit-driven business cycles, tracing the boom, crisis, bust, and recovery through monetary inflation, interest rates, malinvestment, and financial fragility. The course concludes by evaluating taxation, public expenditure, government debt, price and product controls, state enterprises, and command economies, comparing their effects on incentives, calculation, production, and resource allocation with those of an unhampered market economy.