This tutorial is compiled in accordance with the requirements of the State Educational Standard of Higher Professional Education. The book sets out the basics of computer science, discloses technologies and tools for collecting, processing, storing and searching for economic information using a modern conceptual and technological apparatus. Issues related to network information processing technologies are considered. The manual contains a set of practical tasks with detailed comments, which will allow students to consolidate their theoretical knowledge in practice. The target audience is students and teachers of economic universities, as well as practical workers and specialists involved in the collection and processing of information.