I use Mazuri Rabbit and I buy bales of hay from the feed store (rabbits and chins both eat the hay so it's more affordable and they love it) It's timothy hay.
As for bedding...well, many people will recommend Carefresh. I tried it ONCE and NEVER again!
Rabbit urine stinks and I found Carefresh unless changed a few times a day turns into rancid mush!
So, I went and go with Aspen most of the time. (sometimes i also use kiln dried pine if I run out of aspen) The Aspen shavings seem to control the odor much better and doesn't turn to mush in an hour. I CAN go 2 or 3 days before changing it since my litter box is HUGE!
I got it out of the pet section at Family Dollar for $2 and it's perfect. Like I said, it's a large litter pan so now my buns have no problems keeping the urine and feces INSIDE the box whereas before, I was using an old 9 X13 baking pan (don't worry, I pitched it
) and I'd find poos scattered around the outside of it due to being too small for Dutchie's fat butt. The big one works SOOO much better and hey, you can't beat the price right?
Congratulations on your bun!! We'll need pics!!