For nonfiction I would recommend books about media criticism and history. Manufacturing consent and The Jakarta Method, for example. These can help set you up for further reading. For media criticism, it will help you recognize when to keep reading about the people that journalists talk to and who they don’t, why they are writing this article rather than that one, and identify others that take a media critical approach, as they are good people to read. For history, I think it is good to read widely and critically. We are not taught particularly thorough or accurate history in school. Much is left out or glossed over with selective narratives. For example, I was taught that the US Civil War was about states’ rights, not slavery, because the text was from Texas and my teacher taught from the book. This was, of course, nonsense. A People’s History of The United States is a pretty good way to start out if you want to start with US history. That might be better than The Jakarta Method, actually.
For fiction, it really depends on what you enjoy! What kinds of stories or topics do you find most interesting?