The teaching aid book functions as long as it is simple, comprehensive, and educational.
It is simple when it answers the necessary with clarity and conciseness. It is comprehensive when it covers all the user's needs, when it complements, explains, and resolves doubts, without burdening with unnecessary "knowledge". The teaching aid book is educational when it is characterized by aesthetics both in form and content. In a nutshell.

Otherwise:
The structure of the textbook was followed with the following innovations.
- Full alignment of the texts of each Unit with the text.
- The texts, in addition to the word-for-word translation and parallel alignment with the text, are also presented in transcription in the n.e.
- In addition to the solved exercises of the textbook and the additional ones from the teacher's book, students and teachers will find supplementary exercises, suggestions for short tests and hourly exams, as well as suggestions for the written exams of June on the accompanying CD.
- Some theoretical Grammar and Syntax chapters are presented in the form of a student's escalating questions, the answers to which complete the chapter.
- Some theoretical chapters of Etymology, Grammar, and Syntax are presented in tables.
Finally, an effort was made to make the book as lightweight as possible.