I develop this course largely based on my teaching at University of Illinois, University of Zurich,?Purdue University and Zhongnan University of Economics and Law? from 2010 to 2020. It is designed to offer the essential tools to study macroeconomics problem. The goal of this course is twofold. The first goal is technical in nature. More specifically, the course will teach you some standard tools and models that currently dominate macroeconomics. The second goal is more substantive in nature. In particular, the course will demonstrate how macroeconomists apply dynamic general equilibrium methods to derive quantitative answers to questions about which we are currently ignorant.