The book "Popular Religion and Folk Customs of North India, Volume 1 (of 2)" by William Crook reveals the unique details and features of the folk religion and folklore of North India. The author draws attention to the beliefs, rituals, myths and legends that make up the colorful mosaic of the culture of this region. The book offers the reader to dive deeper into the world of religious practices and look at them from the point of view of a researcher who has devoted a lot of time to the study and analysis of the folk customs of India. Thanks to this book, the reader will have the opportunity to learn a lot of new and interesting things about the spiritual world and traditions of Northern India.