An introduction to basic microeconomic principles, this text aims to keep students focused on learning and applying the central ideas used in economic analysis. It is intended to be used as a a study "tool" for students and a complement to, rather than a substitute for, the instructor. Pedagogy and applications are designed to maintain a focus on the fundamentals and allow flexibility for instructors to bring in additional material as they choose. In-text Internet links and a dedicated Web site provide opportunities and exercises for students to access and analyze additional real-world economic applications.