A novel in three parts “Giving Lessons” by Lazary Karelin is dedicated to the urgent and sharp problem of the fight against drug addiction. His hero seriously falters in life, but finds the strength to analyze the past and understand what is truly important in this life, what is superficial, and on which side of the barricades he should be. The novel is multi-layered; the author shares his life observations and offers his analysis of many phenomena.