The self-teacher is based on a technique that the author has successfully used for over 20 years. With the help of this technique, many schoolchildren were able to enter chemical faculties and medical universities. The self-teacher is especially useful for 11th grade students who repeat organic chemistry, as well as those who are preparing for the exam in chemistry and want to get an excellent grade in exams. Faced with difficult questions that cause difficulties, you will immediately receive help in the form of comments, explanations, examples. At the end of each chapter, you will find the tests and exercises for securing the material. The book in an accessible form allows you to understand this interesting and complex subject, and graduates - to prepare for EGE. The book will be useful for parents who care about the education of children, tutors, students and teachers, and everyone who wants to understand chemistry, and, of course, all schoolchildren.