"Computer science: The textbook for foreign citizens is not just a textbook, but a real guide to the fascinating and constantly developing world of information technology, created by a team of experienced authors specializing in educational programs for foreign students. This book is intended for those who want not only to master the basics of computer science, but also to understand how modern technology is changing our world, opening up new horizons of knowledge and opportunities for the reader. The focus of this guide is on the fundamental principles of computer science that underpin the digital age. The authors masterfully disclose such topics as the structure and functioning of computers, basic algorithms, programming, databases, networks and the Internet, as well as modern trends in the field of information technology. Particular attention is paid to practical aspects, which makes the book a particularly valuable resource for those who want not only to theoretically familiarize themselves with the subject, but also to apply the knowledge gained in practice. As a result, the reader will be able to understand how modern information systems work, learn how to navigate in the digital space and use technology to solve real-world problems. The book "Computer Science: Educational and Methodological Manual for Foreign Citizens" is perfect for students, teachers and specialists who study or teach computer science in international educational institutions . It will be interesting for young people aged 16 to 30 years, as well as adults who want to expand their knowledge in the field of information technology. It is especially useful for foreign students who master study programs in Russian, and need understandable, structured and accessible materials that take into account the peculiarities of intercultural communication. The peculiarity of this manual is a clear and accessible presentation of complex concepts, supported by illustrations, practical tasks and recommendations, which contributes to deep assimilation of the material. The authors use a modern style of presenting information, making reading not only useful, but also fascinating. The book raises important topics related to the ethical aspects of the use of information technology, data security and privacy issues, as well as the prospects for the development of the digital world. This makes the manual relevant and in demand in the face of constant technological changes. If we talk about style, the team of authors adheres to a pragmatic and at the same time motivating approach, which helps the reader not only to understand the theory, but also to be inspired to further study and practical application of knowledge. In general, this textbook is a reliable assistant for those who want to confidently navigate the world of information technology, expand their horizons and prepare for the modern challenges of the digital era. So, “Computer Science: A Textbook for Foreign Citizens” is not only a textbook, but also a key to understanding the modern information space, created for those who seek to become a competent specialist or simply expand their knowledge. This book will become an indispensable companion for all who appreciate the quality of education, practical orientation and relevance of information, because it helps to reveal the secrets of the digital world and prepare for a future full of new opportunities and challenges.