welcome! these pages list the essentials.
the HRS page, scroll to the bottom for list: http://www.rabbit.org/care/living-with-a-house-rabbit.html
the BinkyBunny FAQ list (see Question #4): binkybunny.com/BUNNYINFO/FAQ/tabid/81/Default.aspx
and important thing to keep in mind is that the basic supplies are easy. it’s the consumables that you will be spending the most time and money on. i will suggest you not purchase a cage from a petstore b/c it is really just a waste of money and they are much too small. it would end up having to be replaced before long anyways. if you are creative and have time, you can build a fancy NIC condo that uses wire cube shelving grids and zipties. if you prefer quick and easy, an xpen comes fully assembled can be set-up in about 5 minutes.
timothy hay is the recommended hay for adult rabbit 7 months-1 year and older. but i know some people feed mixtures of different grass hays (brome, meadow, orchard). alfalfa is not a grass hay and is only for babies under 7 months. bunnies do love to eat, so if you’re worried about variety, you can change things up quite a bit with the veggies you offer. the rabbit will need 2-4 cups of at least 3 different types per day. you will learn quickly what your buns favorite veggies are and which ones they do not care for so much.
if you have any other questions, please ask.