This book contains essays and revision notes for Microeconomics at the undergraduate level. This book includes the following topics: - Utility Curves; - Perfect Competition vs. Monopoly; - Oligopoly; - Collusion; - Monopolistic Competition; - Price Discrimination; - X-Efficiency; - Why do Firms Exist?; - Negative Externalities; - Positive Externalities; - Public Goods; - Adverse Selection; - General Equilibrium; - Efficiency Wages; - Minimum Wages and Unemployment; - Arrow-Pratt Risk-Aversion