The course provides an intermediate-level understanding, linked to the professional opportunities, of the microeconomic approach to economic analysis. The lectures introduce, first, the classic treatment of individual choice, demand, and general competitive equilibrium in pure exchange economies. Firms’ production decisions, under different hypotheses concerning market forms, are next considered. It is also offered an introductory analysis to strategic-interaction problems, to externalities and public goods, to decisions under risk and uncertainty, to asymmetric information, to the working of markets and organizations. During the lectures, a large number of applications illustrate the role of the theoretical concepts in the interpretation and understanding of real-world facts.