The guide is intended for the initial systematic study of organic chemistry. Its scope is somewhat wider than the university chemical specialty program. The first part of the guide is built on ; the second part is intended for careful reading rather than for in-depth study. Book I includes sections of the first part: introduction, aliphatic series and alicycles in book II - aromatic series, heterocycles and the entire second part . Basic information on those sections that are developed into whole chapters in the second part is also available in the first part of the book, which also includes information about the methods of physical research and concepts of chemical bonding. The material is presented in the order of increasing difficulty, at first quite simple and detailed, then more concisely. can serve as an independent acquaintance with the subject, and to study it in universities and chemical universities . The book will undoubtedly be interesting for graduate students, teachers, young scientists and engineers working in the field of organic chemistry.