Drugs and Drug-Taking Behaviour; Fundamentals of Drug Action; Drugs and Their Effects - Biophysical and Psychological; Theories of Chemical Dependency; A Psychological Perspective on Drug-Taking Behaviour; Alcohol, Health and Social Impacts - The Nature of Alcohol and its Effects on the Body, Alcohol-Related Problems; Alcoholism; Treatment for Alcoholism; Treatment for Drug Abuse; Prevention; Tobacco and Health.