What is the purpose of a preface? And does your book even need one?
Not every book has a preface, after all.
And you’re more likely to see one in a nonfiction book than in a novel, as you’ll see in the preface examples further on.
But what goes in there, anyway?
What does it cover that you wouldn’t put in your book’s introduction?
And how do you write a preface that won’t sabotage your reader’s interest?