Loved, loved, LOVED the Harry Potter series. The first couple ones are written with the intended audience being younger children (hence the bigger fonts, shorter books, and simplier story lines... sorta). But as you move along, there will be vocabulary and story line concepts that you know was meant to mature with the intended child reading. I believe I read the last, longest book in about three days. You will be picking it up to read every waking moment (and the moments you should be sleeping) you have.