Let me start with this: my kid loved this book.  It’s a simple story about an exclamation mark trying to fit in and finding his place in the world of punctuation. Once the mark finds his voice, the story becomes delightful and my kid loved the way we read it, really over extended and excited, driving home the exclamations; needless to say it got read over and over at bed time.  I also really enjoyed the shape of this book, long and thin, just like the punctuation it’s about.  If you’ve got a kid who is generally not into stories, but keen on non-fiction, I would give this a go