As Lorenzo aptly put it, avoid 50 Shades of Gray as a sexual guide. It's fiction and fantasy, and pretty terribly executed at that. Consider what you (and partner(s are interested in, and explore that naturally. If you enjoy pain, consider gently poking at BDSM, but make sure to do some research, and remember, porn isn't research, that's more fantasy. If you have fetishes, consider them (alone or together), and explore them as possibilities. There is no box, aside from where you put the walls.