ok, if you get a young enough baby it will imprint on you. Basicly you will be "mother". It WILL follow you everywhere, and if you are out of it's sight, it will quack until you get back, or until it falls asleep. Which ever comes first.
You have to have something atleast 6ftx8ft, wings clipped, and a kids pool. They HAVE to have access to water like that at ALL times. Otherwise there is some kind of disease that will cripple their feet.
You should be able to find a good duck feed at any farm supply store.
If it is a baby, it will take a while for them to devlope their oils.
When I had mine, I don't know how old it was, but I put a little (and I do mean little) bit of baby oil on it's feathers. He looked funny for a long time, but the natural "duck oils" kicked in.
A mother has natural oils she uses when she preens the babies, and that keeps them afloat. So when you put a baby that hasn't been preened by it's mother in water, they kind of just soak the water up. So you have to be careful of that.
Just google "duck care sheets" and you should come up with a bunch of things.
Neptune, Zion, Enigma,