You should offer him hay everyday for nibbling throughout the day. Rabbits also love fresh vegetables. They love grass and weeds, carrots, and green beans. They also enjoy eating apples. Cabbage is not a good choice because it is very gassy and may make your rabbit feel sick and uncomfortable.
Rabbits love to chew.
They do this to keep their teeth from growing too long. Apple tree branches are a good thing to give the rabbit to chew on. Fresh clean water should be available for your rabbit at all times. Your rabbits hutch should be cleaned once a week. You will need to supply clean bedding and scrape the waste from under the cage and dispose of it.