• The theory is presented using the question-answer method. Where we deemed necessary, we provided some additional information to help clarify subtle points of the theory. At the end of the theory of each chapter, there are review questions.
• The questions are structured by type (closed type - topic A of the National Exams and open type - topic B of the National Exams). Specifically, the closed type questions are divided into group A questions (based on the theory of the school textbook) and group B questions (questions of greater depth).
• In the solved exercises-problems of each chapter, the methodology is embedded at key points, which the student often encounters when solving exercises and problems. There is also detailed guidance on what the student should not forget after studying the solved example, as well as a note on which exercises to solve are similar for practice.
• The exercises to be solved contain basic concepts that the student must grasp before moving on to the problems to be solved, which require more complex thinking.
• In each section (before the closed type questions) there is a detailed study proposal structured on two levels. The 1st level refers to basic study, while the 2nd level refers to in-depth study.

For all questions, exercises, and problems to be solved, there are detailed solutions at the end of the book