The training manual is a short systematized presentation of the main concepts underlying the science of risk management. The most important theoretical models and their application in risk management practice are understood at an accessible level. The main risk measures, methods of risk assessment, criteria for making decisions in conditions of uncertainty, methods of risk management when making decisions in financial markets and in real business are considered. The peculiarity of the book is that it thoroughly discusses the methods of evaluating flexible solutions that have appeared in recent years (the approach of real options). The manual is intended for students of the bachelor's program studying in the direction of "Management," but it will also be useful for other students studying economics and finance, as well as those financial practitioners who are seriously interested in issues of assessment and risk management.