The book “Elementary concepts about difference schemes” by Alexander Knyazev is a fascinating and deep immersion in the world of numerical methods that are widely used in mathematics and engineering. This work will become an indispensable assistant for students, graduate students and specialists interested in computational methods, as well as for anyone who seeks to understand the basics of difference schemes and their practical application. In his book, Prince masterfully explains what difference circuits are, how they work, and why they are so important for solving differential equations. The author not only introduces the reader to the theoretical aspects, but also offers practical examples that allow you to consolidate the knowledge gained. By reading this book, you will be able to see how abstract mathematical concepts become real tools for solving complex problems. The prince emphasizes that difference schemes are not just a mathematical tool, but a whole philosophy that allows modeling and analyzing processes in a variety of fields, from physics to economics. The book will be of particular interest to students of technical specialties, graduate students and teachers, as well as anyone engaged in scientific research in the field of mathematics and applied sciences .. If you are passionate about mathematics, physics or engineering and want to deepen your knowledge in the field of numerical methods, then “Elementary concepts of difference schemes” will be a real find for you. Even if you are not an expert in the field, but just want to expand your horizons, this book will help you understand how mathematics can be applied to solving real-world problems. The topics raised in the book cover a wide range of issues related to numerical analysis. Prince examines in detail such aspects as the stability of difference schemes, their convergence and accuracy. These questions are key to understanding how to properly apply difference schemes in different situations. The author is not afraid to delve into the details, which makes the book useful for both beginners and more experienced readers who want to refresh their knowledge. The Prince's style is clear and accessible. He is able to explain complex things in simple language, which makes his books especially attractive to a wide audience. There are already several other well-known works in his arsenal that also deserve attention, for example, "Numbered Methods for Engineers" and "