Writing assignment: Read a bunch of beginnings to books and pay attention to how things are revealed. What you know don't know and suspect from the beginning of a few books. What is the conflict? What do you care about? Who do you like and why? Is their anyone you don't like? How much are you willing to wade through to get to the end? Take notes to have a record of your impressions before reading to the end. Go back afterwards and see how much you knew--how much you didn't know, how much you wanted to know.
Let's leave it at that.