This book is a study guide and introductory reading for people who are interested in learning economics concepts such as the Fiscal policies, Keynesian economics, and the classical model. This book is suitable for students from middle school, high school, and even college (first-year level). This book can also be used for AP Macroeconomics study. *Bigger version (Letter-size) available (search Yun Ju Yang to find the original version of this book!)