Welcome to YT.
Yorkies are a very smart breed, if they are food motivated they will learn quickly. Pad training or house breaking if not consistent will be a challenge, consistency is the key factor in house breaking. You cannot walk your puppy until they have had their last vaccine which is usually at 5 to 6 months old.You will have to pad train first. I have had 5 yorkies puppies, all were 100% pad trained at 5 months old, when they had their last vaccine I started to house break them, at 7 months old they were 100% house broken with no accidents in the house. They were confined to a small area that had their bed, food, water pee pads and toys.
Yes, I have read many posts where ppl had issues in pad training and house breaking. You must confine them to one area when they are wee lil babies, Iris pens and X pens are perfect for this. Put in their bed, food, water, pee pads and toys.
http://www.amazon.com/IRIS-4-Panel-P.../dp/B00D5P846Y http://www.amazon.com/s?k=x-pen+for+...UKjgEmbhQ1JF9A
You must put the time in, be consistent and you will have a intelligent, quirky, funny lil clown of a baby, but, you have to put the time in, and be consistent in training. If you feel you will not be able to be consistent, this is not the breed for you.