The whole work is composed of two volumes. This book (Volume 2), which is the latter part, outlines the basic problems of economics in Part 1, and in Part 2, it provides an overview of the fundamental theories of macroeconomics, microeconomics, economic policy, finance and fiscal policy, and international economics. Especially considering that the target audience is students at the introductory level, the explanations are made as easy to understand as possible. This book is intended to serve as a foundation and preparation for students who are about to seriously study and take courses in (modern) economic theory using textbooks such as "Principles of Economics." The cover has folds and tears. There are also markings with markers and pencils inside, but there is no problem with reading.