. Books can be divided into two main categories: fiction and non-fiction. Fiction books are stories that are made up by the author, while non-fiction books are based on facts and real-life events. Fiction books can be further divided into genres such as fantasy, romance, mystery, and science fiction. Non-fiction books can be divided into categories such as history, biography, science, and self-help. No matter what type of book you are looking for, there is something for everyone.