This set of materials consists of chapters selected from the Principles of Economics of Gregory Mankiw. The material is divided into three parts. Part 1 is the introduction to economics, while Parts 2 and 3 are on microeconomics and macroeconomics. Exam questions in economics for the VNP Entrance Examination are limited to these chapters. Reading these chapters carefully will help you reviewing basic principles of economics and preparing for the exam. In addition, the economics knowledge in this material is also very helpful for your future studying at VNP. And it is interesting as well.