In the process of writing my own nonfiction book proposal earlier this year (thanks to my Year of Amazing pledge), I searched everywhere I could for tips and advice on how to write a nonfiction book proposal. Many were great, but super lengthy and time consuming to read. I found this advice once offered by former Writer's Digest publisher Jane Friedman (who rejected and approved proposals over the years) not only spot on, but easy to digest. I followed them and I landed a literary agent. Read on as these tips could help you, too.