Your short (3-5 sentence) review: For fiction books, without any spoilers, let your reader know something about the main character(s) and the conflict, and whether or not the book is worth their time. You may also add thoughts about the setting, minor characters, genre, other books that are similar, what kinds of readers might most appreciate this book, what is or isn't especially good about it, or other thoughts. But keep it short!
If it's non-fiction what questions does it explore and how is it organized?