How to write a nonfiction book proposal

OK. So you’ve got this great idea and you just know it will make a best-selling book; even a movie (few writers can resist the movie-thing temptation, myself included). But before you write that first word just after “Chapter One” there are certain things you must do. Think query before the article, job before the house, horse before the cart, etc. You need a book proposal - selling the book concept rather than the book