If you've only seen the movie, you have no idea how much of a treat awaits you in the book! The Princess Bride by William Goldman does tell the story of Buttercup, Westley, and all your favorite characters, but it also tells of the struggles that Goldman went through to translate S. Morgenstern's Classic Tale of True Love and High Adventure from the original Florinese. The meta framework is possibly more entertaining than the story as you've seen it!