Why you need a revocable trust

I want to write a book from a lay person's point of view about the benefits of setting up a revocable trust to limit future cost and chaos at your loved one's passing. I want to educate the reader in plain language about the difference between passing down assets through a will vs. revocable trust. I want to educate readers about the ways they can create a trust and recommend they seek legal counsel if they have more than a few assets. i am looking for a 20-30k word document