Comprehensive and modern, Hal R. Varian's book is among the most successful textbooks in the field of Microeconomics. Its completeness is due to the incorporation of the most contemporary views and methods of analysis that have appeared in the theoretical literature. The author's goal is to present the methods of Microeconomics in a way that helps students apply these tools on their own. In the third edition, you will find: A new chapter on measurement, which describes some of the issues that arise in estimating economic relationships. The idea is for students to become familiar with some basic econometric concepts and to try to bridge the theory of the book with practical problems. Additionally, new examples from businesses such as Apple, eBay, Google, Yahoo, and others. Topics discussed include the complementarity of iPod and iTunes, the positive feedback related to companies like Facebook, and the advertising auction models used by Google, Microsoft, and Yahoo. Finally, an extensive discussion on the issues of mechanism design.