Not sure how much you know about puppies. google parvo virus, it is important that you do not let your new puppy on strange ground anywhere.
Once all shots are done then you are safe. Be very protective that your puppy does not get sick. It is deadly!!!
I have a little girl, she is 7 months old, we went away when we first got her, so for the first time in 18 years, i pp pad trained her. well she is still doing that, seems to like it better then going outside, but she does that to, just not enough yet. But I do not panic as yorkies are the hardest dogs to train in that respect. But you do need patience patience. They will get it, and consistency goes a long way.
If a yorkie is put in a position to not trust, due to a punishment, they do NOT forget. Will always act like your going to hit. For example, my oldest was attacked viciously by a 6 month old yorkie I had just gotten, he was one at the time. 4 years later we are just able to say, he is not so intimidated by other dogs. He felt any other dog was out to attack him. It has been a long haul with him. He is my precious 4 pound male, if he is not on my knew he is up my butt (so my hubby says). but that all started after he was attacked and he needs security and he gets that with being stuck to me.
Hope something I have said here helps you out. Not only on the training but other stuff to.. pooh's mum