The link below is to an article that looks at some 15 ways to organise your books. I don’t use any of these methods. I use a personalised version of the Dewey system, which if your familiar with Dewey will mean you can more-or-less follow my way of doing things.
For more visit:
https://www.bustle.com/p/15-ways-to-organize-your-bookshelves-for-every-personality-type-17860180