The textbook discusses the main theoretical provisions of modern organic chemistry, issues of nomenclature of organic compounds, classification and mechanism of organic reactions. The training material is modularly structured, each module contains detailed solutions to typical tasks, as well as training tests that allow you to analyze the success of learning each topic. Consideration of individual classes of organic compounds involves discussion of such issues as structural features and the nature of chemical bonds, nomenclature and isomerism, production methods, physical and chemical properties, aspects of practical application. The presence of the headings "A little history," "Learn more," "Do you want to experiment?" Gives the educational material a certain emotional coloring that contributes to the organization of some kind of virtual dialogue between the author and readers. A transcript of concepts and terms can be found in the glossary. The list of nominal reactions and terms contains more than 400 items. The biographical reference book allows the reader to get acquainted with the personalities of those scientists whose works have created and continue to fruitfully develop organic chemistry at the present stage.