The textbook outlines the basic concepts and essence of information and information resources. A classification of information resources is given, with special attention paid to undocumented resources. The characteristics of various printed and electronic information resources are given. For the first time, material is presented on assessing the quality of information resources and the effectiveness of their use, as well as on modeling the processes of formation and distribution of information resources. The characteristics of the market for information products and services are considered, consumers, sources and suppliers of information resources are described in sufficient detail. The basics of legal regulation in the information market are given. For university students and specialists in the field of global information resources and information management.