Beginnings of Probability Theory by D. Vasilkova is a fascinating and deep immersion into the world of probabilistic models and statistical methods, which have become the basis for many scientific disciplines and practical applications. In this work, the author not only explains the basic concepts of probability theory, but also demonstrates their importance in everyday life, which makes the book especially valuable for a wide range of readers. Vasilkov, known for his scientific works and pedagogical approach, offers the reader not just a set of formulas and theorems, but a whole philosophy based on the analysis of random events. He skillfully combines theoretical aspects with practical examples, which allows the reader not only to understand, but also to feel how probability theory works in the real world. This book will be of interest to both undergraduate and graduate students studying mathematics, statistics and related disciplines, as well as those who just want to expand their knowledge in the field of randomness science. One of the key topics raised in the book is the importance of probabilistic thinking in decision-making. Vasilkov shows how understanding probabilities can help in risk assessment and making more informed decisions in areas ranging from finance and business to medicine and social sciences. He gives many examples from real life, illustrating how theoretical concepts can be applied in practice. This makes the book particularly relevant to entrepreneurs, managers, and anyone looking to improve their data analysis skills. The author's style is distinguished by clarity and accessibility, which makes complex mathematical concepts understandable even for those who do not have deep knowledge in the field of mathematics. Vasilkov uses live language and fascinating metaphors, which allows the reader to easily absorb material and not lose interest in reading. His ability to explain complex things in simple language makes this book a real textbook that can be useful both in educational institutions and for self-education. The book "Principles of Probability Theory" also raises important philosophical questions about randomness and predestination, about how we perceive random events in our lives. These reflections make the work not only educational, but also deeply philosophical, which can attract the attention of readers interested not only in mathematics, but also in broader questions about the nature of reality. If you are looking for literature that will help you understand the basics of probability theory and teach you how to apply this knowledge in life, then the “Principles of Probability Theory” is exactly what you need. The book will be an excellent addition to the library of both students and professionals, as well as anyone who wants to develop their critical thinking and learn to analyze information. Vasilkov is also known for his other works on mathematics and statistics, and his books have consistently received positive reviews for their accessibility and practical focus. If you are interested in topics such as “Statistics for beginners”, “Mathematics in everyday life” or “How to make decisions based on data”, then you will definitely find a lot of useful and fascinating in his works. Do not miss the opportunity to get acquainted with the "Principle of Probability Theory" - a book that not only teaches, but also inspires new discoveries in the world of science and knowledge.