The book “Stepped and Planetary Transmissions of Mechanical Transmissions: A Study Guide”, created by the team of authors, is a unique publication that will become an indispensable assistant for students, engineers and anyone interested in mechanics and automotive industry. This manual not only describes the theoretical aspects of the work of transmissions, but also immerses the reader in the world of practical knowledge necessary for understanding and applying mechanical transmissions in real life. This tutorial examines in detail both step and planetary transmissions, which allows the reader to get a complete understanding of the principles of their work. The book covers a wide range of topics: from the basics of design and operating principles to complex issues related to the setup and repair of transmissions. The reader will be able to learn how the various elements of the gearbox interact with each other, as well as what factors affect their efficiency and durability. Who can like this edition? First of all, it will be useful for students of technical universities, studying in specialties related to the automotive industry and mechanics . But not only them! Engineers and mechanics working in the automotive industry will find in the book a lot of useful information that will help them in everyday practice. In addition, car enthusiasts and motorists seeking a deeper understanding of the design of their cars will also appreciate this guide. The topics raised in the book cover not only technical aspects, but also current trends in the field of transmissions. With the rapid development of technologies such as electrification and automation, understanding the operation of mechanical transmissions is becoming especially relevant. The book helps the reader to understand how traditional transmission mechanisms evolve in response to new challenges and demands of time. The style of the authors is distinguished by clarity and accessibility of presentation, which makes complex technical concepts understandable even for beginners. Each chapter is accompanied by illustrations and diagrams that help to visualize the material and better assimilate the information. This tutorial is not only informative, but also fascinating, which makes the learning process more interesting and productive. If you are looking for literature on topics related to mechanical transmissions, then this guide will be an excellent choice. It can be compared with other well-known publications, such as “Automotive transmissions: theory and practice” or “Basics of car mechanics and dynamics” .. The book “Stepped and Planetary Transmissions of Mechanical Transmissions” offers a unique look at familiar topics, making it an indispensable source of knowledge for anyone who wants to deepen their knowledge in the field of mechanics. Do not miss the opportunity to discover the world of mechanical transmissions with this tutorial It will become your reliable companion in the study and understanding of complex processes occurring in the car, and will help you become a real expert in this field.