One book at a time? Or more than one? If more, are they different types/genres? Or similar?
(We’re talking recreational reading, here—books for work or school don’t really count since they’re not optional.)
As for what I read - No rhyme, no reason - No, that's not true, because I am apt to be reading poetry and non-fiction together, along with fiction, which can be anything from classics to children's books.
(In fact, I have just joined a read-and-knit-along for Anne of Green Gables, and I'm looking forward to it as I would look forward to curling up with ice water and peppermints... no, that's A Tree Grows in Brooklyn, which I also want to reread...)