I read anything that's nailed down, or even just moving slowly. Cereal boxes, candy wrappers, all genres, etc., and I don't always have much time for arbitrary distinctions like literary fiction vs. genre fiction.
I actually read Farewell, My Lovely (his second book) first, so I was a bit rearranged in Marlowe's timeline. But it doesn't really matter--Chandler hits it out of the park again.