A concise introduction to the private and general theory of relativity is given, allowing you to quickly and purposefully progress from complete ignorance of the theory to understanding its most significant achievements and problems. Explained the basics of the theory (the MichelsonMorley experience, Lorentz transformation, the twin paradox, etc.) p. ), Tensor Calculation, Lorenz and Poincaré , Maxwell's Tensor Equations , Relativistic Generalization of Macroscopic Electrodynamics , Lagrangian and Hamiltonian formulations of relativistic dynamics, Principle of Equivalence , Riman space , Maxwell's equations in the gravitational field and , Finally, Gravitational Field Equation in General Theory of Relativity , The problems are discussed in detail (in particular, ,) concepts of black hole and gravitational collapse are introduced). The book is designed for senior students of universities and technical universities, graduate students and researchers who want to join the modern problems of space physics and cosmology, as well as for teachers.