This book analyzes the economic concepts described in chapters 4 and 5 related to Microeconomics (as a continuation of the first volume), as well as the economic figures analyzed in chapters 7, 9, and 10 related to the field of Macroeconomics (according to the exam syllabus) of the school textbook for the course Principles of Economic Theory.

The goal of the book is for each student, with the valuable help of their teacher, to understand and assimilate all the economic concepts they will encounter in the taught material. To make the understanding of concepts and methodology easier, key points of the theory are highlighted and cases of exercises of graded difficulty are presented in the form of solved applications in each thematic unit. Additionally, to consolidate the acquired knowledge, the student is called to solve a diverse range of exercises, multiple-choice questions, and true-false questions.

The desired outcome is for the student to fully understand all the arising topics and to handle them successfully.

Each chapter is divided into sections, and each section has the following structure:
- Key points of theory
- Applications (Solved exercises)
- Exercises
- Multiple-choice questions
- True-False questions
- Theory questions
- Evaluation criteria