Stymied about how to write a book proposal for your non-fiction book?
The following websites provide guidance:
http://www.writersdigest.com/online-editor/the-8-essential-elements-of-a-nonfiction-book-proposal
http://janefriedman.com/2012/11/09/start-here-how-to-write-a-book-proposal/
http://www.spawn.org/marketing/bookprop.htm
Check Publishers' websites. Most of them (particularly those that take unagented submissions) have a "For Authors" or "Submissions" link that will give details of what that publisher expects in a proposal, and you'll see various formats different publishers expect.
Helpful print books:
Author 101 - Best Selling Book Proposals by Rick Frishman and Robyn Freedman Spizman (ISBN 1-59337-412-7)
Nonfiction Book Proposals Anybody Can Write by Elizabeth Lyon (ISBN 0-399-52827-X)
Good luck! Let readers know about your success by leaving a comment on this post.