If you intend to put your bunny in a cage, do ensure that the cage is at least eight times its size when fully grown. This ensures that your rabbit is allowed some space to stretch its legs when you are not around to let it out of its cage. Also keep in mind that the bunny's cage should not have a wired base, as it will hurt and cause injury to your bunny's paws. A plastic base will be easy to clean and is great for your bunny's paws.
In your bunny's cage, you can designate a corner for its "toilet". Sometimes bunnies can be fussy and pick a different corner of the house as its toilet. To simplify matters, you can change its litter corner to the one of your bunny's choosing.