The book "Practices on the course "General Theory of Systems" by B. In. Barkalina is a unique manual that immerses the reader in the world of system thinking and analysis. This publication will be an indispensable assistant for both students and practitioners seeking to deepen their knowledge in the field of general systems theory, which covers a variety of disciplines from engineering to sociology. Author, B. In. Barcalin is known for his deep understanding of the subject and his ability to convey complex concepts. His style of presentation is clear and logical, which makes the material easy to perceive. The book is not just theoretical, it includes practical tasks and examples, which allows readers not only to learn the theory, but also to apply it in practice. This makes the "General Systems Theory Practice" an ideal choice for those who want not only to study, but also to actively use the knowledge gained. This workshop examines key aspects of general systems theory, such as the system approach, the interaction of system elements and their impact on integrity. Readers will be able to learn about the methods of modeling, analysis and synthesis of systems, as well as how to apply this knowledge in various fields - from project management to the development of new technologies. The book raises important topics, such as the complexity of systems, the dynamics of their behavior and ways to optimize, which makes it relevant in a rapidly changing world. This book will be of interest to students of technical and humanitarian specialties, as well as to all those who are engaged in the study of system processes. If you are looking for literature on topics such as systems analysis, project management or systems theory, then the General Systems Theory course will be a real find for you. It is suitable for both beginners and those who already have experience in this area and want to expand their horizons. The topics covered in the book are relevant not only for the scientific community, but also for business, where a systematic approach is becoming increasingly important. Understanding systemic relationships helps to make better informed decisions and develop effective strategies. Barkalin emphasizes that for the successful functioning of any system, many factors must be taken into account, which makes the approach to solving problems multilateral and multifaceted. General Systems Theory is not just a tutorial, but a whole world of opportunities for those who want to understand how systems work in our world. It inspires exploration and the discovery of new horizons, which makes it worthy of the attention of anyone interested in systems thinking. If you are looking for literature that will help you develop analytical skills and learn to think systematically, then this publication will become your faithful companion. Do not miss the opportunity to immerse yourself in the fascinating world of general systems theory with B. In. Barkalin is an author who knows how to make complex simple and accessible .