The book "Differential Equations: A Study Guide" edited by P. A. Velmisova is an indispensable resource for students, graduate students and anyone who seeks to deepen their knowledge in the field of mathematical analysis and the theory of differential equations. This textbook, written by a team of authors, is a carefully structured manual that covers a wide range of topics related to differential equations, and is an ideal companion to study both in class and independently. The book deals with both ordinary and partial differential equations, which makes it useful for students of various specialties - from mathematics and physics to engineering and economics. The authors offer the reader not only theoretical foundations, but also practical tasks, which allows to consolidate the knowledge gained in practice. Each chapter begins with an introduction to the basic concepts, followed by a detailed explanation of the theory, supplemented by examples that help to better understand the material. Who can like this tutorial? First of all, it will be useful for senior students and graduate students who study mathematics, physics, computer science and engineering disciplines . The book will also be of interest to teachers who are looking for high-quality educational material for their students. Even those who are just interested in mathematics and want to understand complex concepts will find this manual a lot of useful. The topics raised in the book cover both classical methods of solving differential equations and modern approaches, such as numerical methods and the use of computer technologies. The authors emphasize the importance of differential equations in various fields of science and technology, which makes the material especially relevant. Readers will be able to see how these equations are applied to real-world problems, from modeling physical processes to analyzing economic systems. The writing style of the authors is clear and accessible, which makes complex mathematical concepts more understandable. They use many illustrations and graphs to visualize ideas and facilitate understanding. This is especially important for students who may encounter difficulties in learning abstract concepts. The book “Differential Equations” also includes many tasks of varying complexity, which allows readers to test their knowledge and skills. These tasks will help develop analytical thinking and teach how to put theory into practice. In addition, at the end of each chapter, answers to problems are presented, which makes it possible to independently test their solutions. Do not forget that P. A. Velmisov is an author known for his scientific works and teaching aids in the field of mathematics. His works are distinguished by a high level of scientific rigor and practical orientation .. If you are interested in topics such as mathematical analysis, function theory and other aspects of higher mathematics, then this guide will be a real discovery for you. In conclusion, “Differential Equations: A Study Guide” is not just a book, but a whole world of mathematical knowledge that will open before you. It will become your trusted assistant in learning and understanding differential equations, and will also help you develop the skills you need for a successful career in science and technology. Do not miss the opportunity to immerse yourself in the fascinating world of mathematics with this wonderful tutorial!