Congratulations!!! I love bunnies, they are so charming and adorable. Mine are house rabbits and have a 48" wire dog crate with a shelf in it and I attached an exercise pen so they have enough space to binky around, in total it is about a 4' x 6' area. The more space your bunny has, the happier he will be. If you don't have room to give your bunny a big living area, you could bunny proof a room and just keep the cage door open during the day. I am hoping to give mine a large fenced in area in my yard this year for fair weather fun time, right now their run is only 6' x 8'. If your bunny lives by itself outside please think about getting it a friend. Rabbits are very social creatures and are happier with a friend of their own kind. Especially if they are not indoors receiving regular human interaction.
The website that KaraBY posted a link to is a very good one and has a lot of information on it regarding housing and diet. Post a picture of your new baby if you get a chance. I am so jealous, I do love Lops the best (but don't tell my sticky-uppy ear fluffers!)