This book is an introduction to programming methods for parallel computers. Its main goal is to teach the reader to independently develop the most effective programs for such computers. The issues of parallelization of specific algorithms are considered on numerous examples of programs in the C language. The book is based on a course of lectures for students of the Faculty of Mechanics and Mathematics of Moscow State University. M.V. Lomonosov. For students, graduate students, researchers, programmers and anyone who wants to learn how to develop programs for parallel computers.