The book "Introductory lectures on numerical methods" by authors Kostomarov D. P. and Favorsky A. P. It is a fascinating and deep dive into the world of numerical methods that play a key role in modern scientific and engineering analysis. This work will be a real find for students, graduate students and specialists seeking to master the basics of numerical modeling and computational technologies. From the first pages, the authors set a tone that combines the availability of presentation and scientific rigor. The book covers a wide range of topics, ranging from basic concepts to more complex algorithms, making it an ideal guide for both beginners and those who already have some experience in this field. Readers will be able to learn about methods for solving linear and nonlinear equations, interpolation, numerical integration and differentiation, as well as methods for solving differential equations. Each section is accompanied by practical examples, which allows you to better understand the theory and apply it in practice. The book will be of interest not only to students of technical specialties, but also to practicing engineers, physicists and mathematicians who are looking for reliable and effective methods for solving problems arising in their work. If you are passionate about computational mathematics, programming, or just want to expand your knowledge of numerical methods, this publication will become your reliable companion. The topics raised in the book are relevant and important for modern society, where computing technologies penetrate into all spheres of life. Numerical methods help solve complex problems in fields such as aerodynamics, mechanics, economics, and even biology. The authors emphasize the importance of accuracy and reliability of methods, which makes the book especially valuable for those who strive for high standards in their work. The style of Kostomarov and Favorsky is clear and logical . They masterfully explain complex concepts using simple and easy-to-understand examples. This makes the book available to a wide audience, even for those who are just starting out in numerical methods. The abundance of illustrations and graphs helps to visualize the material and facilitates its assimilation. Do not forget that Kostomarov and Favorsky are well-known specialists in their field, and their works have already won recognition among readers. Their previous publications also cover the topics of computational mathematics and numerical methods, which emphasizes their experience and authority. Readers familiar with other works of the authors will find in this book familiar approaches and ideas, but also new, fresh views on familiar problems. In conclusion, “Introductory Lectures on Numerical Methods” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of numerical methods and their application. This book will be your reliable assistant on the way to mastering complex computing techniques and will help you become more confident in your skills. Do not miss the opportunity to discover the world of numerical methods with this fascinating and informative publication!