is a treasure trove of the essential activities and skills that have defined generations of boyhoods, from building a treehouse to fishing to finding true north. Parents looking to reduce screen time and rediscover the great outdoors can use this book to fill weekend afternoons and summer days with wonder, excitement, adventure, and fun—learn to build go-carts and electromagnets, identify insects and spiders, and fly the world’s best paper airplanes. This charming and practical guide, packed with hundreds of full-color charts, maps, diagrams, and illustrations, will ignite the imagination and stimulate curiosity, and provide grandfathers, fathers, sons, and brothers the opportunity to deepen their bonds. Conn Iggulden has at last put together a second wonderful collection that is the essence of boyhood.