Fiction mostly. The only non-fiction I read are either gifts from others, or are about science. A few books here and there which examine Sumerian myths and religion. Mostly, the non-fiction stuff I read tends to revolve heavily around the same types of subjects in my fiction books. I might read a book about the history of comics in Canada. Or about a guy attempting to become a so-called Real Life Superhero (which was pretty funny, actually). Vampire lore and how it has developed in different countries; black holes, heroic myths, shit like that.
"You must be proud, bold, pleasant, resolute,
And now and then stab, as occasion serves."
Edward II: Act 2 Scene 1, by Christopher Marlowe