As to bindings, I've always been a fan of spiral bound books.
There's also the Japanese style of printing shorter books in multiple volumes (at least I think this is the case - correct me if I'm wrong).
Given my aversion to paper-based reading, I've enjoyed using my Kindle, smartphone, and tablet to read. However, now there's two more problems. First, my smartphone is a constant source of distraction (calls, texts, work emails, personal emails, app notifications, etc.). Second, it feels like I spend the majority of my waking life looking at either a computer screen, a smartphone screen, or a Kindle screen -- it's kind of unsettling.