The textbook provides information about the structure of the forensic expert system of the Russian Federation, discusses procedural and organizational issues of preparation, appointment and production of forensic examinations, features of the design of a procedural document - a resolution on the appointment of a forensic examination, including in connection with differences between categories of forensic experts. The stages of the emergence and development of certain types of forensic examinations are shown. The basic recommendations of forensic experts on the preparation of materials, comparison samples for the appointment of specific forensic examinations are systematically stated and justified, in accordance with various investigative situations, formulations of questions submitted for expert permission are proposed, recommendations on the seizure, packaging, storage and transportation of objects for specific types of forensic examinations are given. The recommendations are illustrated with examples from the authors' expert practice. The work was prepared by an author's team of acting forensic experts with practical experience from 8 to 30 years. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students, trainees, postgraduates, adjuncts and teachers of law schools and faculties, practitioners of investigative and investigative law enforcement agencies, judges, prosecutors, lawyers, as well as for a wide audience of persons interested in criminology and forensic examination.