that's an awesome challenge.
According to my mother, I taught myself to read at 2-1/2 by reading the cereal box. I don't remember that, but do remember that I was reading the Bobbsey Twins (yes, that dates me...
) when I started kindergarten.
I read a variety of subjects: medicine & healthcare delivery for work (although I do read epidemiology for pleasure as well). For pleasure, literary fiction of any genre (just finished Octavia Butler's oevre), anything conservation & nature related, and farm memoirs.