Sparkly: I’m impressed that you want to find suitable material to read. I’m going to kick off by saying that, whatever your age, Harry Potter is a masterpiece. I’m sure you’ve already read it, but on the off chance you haven’t, I cannot recommend a series more highly.
What books are currently reading? It would be easier to suggest good books if we had a little more information about what kind of books you’re looking for. There is an enormous range out there, after all.