The book proposal is one of the most misunderstood documents in publishing. Some authors spend months writing one they never needed. Others query agents for years without one and wonder why no one bites. If you are a nonfiction author — a founder, a leader, a coach, a consultant, a person with a story and a methodology — the question of whether you need a proposal, and what should be in it, is one of the most important questions you will answer before your book reaches readers. This is the guide.