How do you know when you’ve found a great book? When looking for a good book, first ask yourself, “what do I like?” Your interests can vary depending on what you like you do. People interested in military might like books about war. I like animals, so I like animal books.
You also may like the type of book, for example, the type of genre. What you like could depend on your book type. Most military books are non-fiction, so they might like a book about war heroes. I myself like fantasy book the best. I wish you the best of luck finding your own great book! :)