Poor lil' guy. At least he's got a new owner now...YOU! It sounds like you'll be good for him. If he doesn't like to go outside, just paper train him. Put him in a crate when you can't watch him, and take him out every couple of hours or after he eats, and place him on the paper. Just keep putting him on the paper until he goes, and then praise him A LOT! Give him a treat, too. They always go after they eat, and after they wake up. The good thing about Yorkies, is that if they do have an accident, it's only a tiny puddle! Good luck to you. Have patience and kindness and I'm sure you'll do fine.