Hi, kept rabbits since I was 18...
They are lovely animals, best to go to a childrens farm where they sell the babies, rather than a pet shop, you never know how old they are in a pet shop! I have had two rabbits together, two boys but after 2 years they started fighting, so my neighbour had one off me.
I'm now on my fourth rabbit, Peter, he's lovely. He's in a large hutch with an attached run. If you look on the web you will find advice about hutch and run sizes, basically, they need enough room to stand on the hind legs and to run around. I also bought one which the roof lifts off of, it makes cleaning out much easier, I use an old dustpan to scoop out the messy stuff and put back clean sawdust and straw. I put extra straw in in the winter months for warmth and also cover the whole thing with a taupauline sheet at night and in the rain.
I bought Peter from Twinlakes in Melton Mowbray, I saw his mum and dad and they are very well looked after. If you handle a rabbit a lot he will be very tame, they like affection. Mine come in the house from time to time, but not so much in the winter due to the sudden changes in temperature. He eats any veges or peelings, dandelion leaves and his favourite treat is the 'dead heads' off my pansies! Although his main food is a normal rabbit food from the pet shop.
Like any animal, look for a clean environment, clear eyes, ears and nose and look at the temperament of the parents.
Good luck.