The textbook outlines the history and legal foundations of the organization of advocacy and advocacy in Russia, the specifics of the participation of a lawyer in various types of Russian legal proceedings (civil, administrative, arbitration, criminal, constitutional, arbitration), as well as in the European Court of Human Rights. It sets out in sufficient detail the procedure for applying a lawyer to a judicial body; his participation in the proceedings; collecting, presenting, researching and evaluating evidence; emerging ethical customer relationship issues; making a speech by a lawyer at a court hearing, etc.