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.)
I've known people who have their "bedside" book, their "traveling" book, and their "waiting in line" book all going at once. I've tried that kind of thing, and I'm not good at it at all. It works a little better if they're different types of books - one fiction, one non-fiction - but I can't do more than two at once, and I always drift more toward one than the other anyway, so one book at a time really works better for me. But since I'll usually start the next book just as soon as I finish one, I guess you could call me a "chain reader" or a "serial (book) monogamist."