This is a great site for reading up about house rabbits:
I have three house rabbits, and the amount of care I put into them I would compare them more to my dog then I would to rodents.
Vet care for them can be expensive, especially if they get sick. You need to make sure you find a vet with a lot of experience with rabbits because some medications and such that are fine for some animals can kill rabbits.
Rabbits should be fixed, esp. females. It usually makes them healthier, better at using a litter box, and less aggressive.
Remember that baby bunnies grow up, and when they hit puberty their personalities can change. They don't usually enjoy being picked up. Out of my three, I have one that hates being held and two that tolerate it, but don't enjoy it.
I wouldn't personally get a rabbit from a pet shop. There are thousands of rabbits in shelters waiting for homes, and most pet shop bunnies come from mills or back yard breeders.
Rabbits can make awesome pets - I adore them! However, they are not the cuddly animals they are often portrayed to be. They can also be expensive and can be pretty high maintance. I suggest you do a lot of research before making your final decision.
Good luck whatever you decide!