The book "The Young Runaway; or, Lost in the Streets" by Horeitio Alger, Jr. tells the story of a young man who runs away from home and tries to survive on the streets. The main character, forced to fight with difficulties, learns independence and invents a way out of difficult situations. Through trials and triumphs, he grows and develops as a person, learning important life lessons. This book is an important work that emphasizes the importance of moral values and inner strength in overcoming obstacles on the way to success.