The book presents constructive methods of symbolic dynamics and their applications to the study of continuous and discrete dynamical systems. The main idea is the construction of a directed graph which represents the str- ture of the state space for the investigated dynamical system. The book c- tains a su?cient number of examples of concrete dynamical systems from illustrative ones to systems of current interest. Results of their numerical s- ulations with detailed comments are presented. For an understanding of the book matter, it is su?cient to be acquainted with a general course of ordinary di?erential equations. The new theoretical results are presented with proofs; the most attention is given to their applications. The book is designed for - niorstudentsandresearchesengagedinapplications ofthedynamicalsystems theory. The base of the presented book is the course of lectures given during the YouthWorkshop"ComputerModelingofDynamicalSystems"(June2004,St.

Petersburg) initiated and supported by the UNESCO-ROSTE. Parts of these lectures were presented in ETH, Zurich, 1992; Pohang University of Techn- ogy, South Korea, 1993; Belmont University, USA, 1996; St. Petersburg U- versity, Russia, 1999; Suleyman Demirel University, Turkey, 2000; Augsburg University, Germany, 2001; Kalmer University, Sweden, 2004. Symbolic image, coding, pseudo-orbit, shadowing property, Newton method, attractor, ?ltration, structural graph, entropy, projective space, L- punov exponent, Morse spectrum, hyperbolicity, structural stability, contr- lability, invariant manifold, chaos.