Welcome to YT! First off,
to you for knowing and not being fooled by the fact that there's no such thing as a miniature or "teacup" yorkie.
I always brush Ferdinand's hair dry. I can't imagine washing him or wetting him every day just to brush him?? His skin would get SO dry!
I don't know anything about finding a reputable breeder on the internet. My only recommendation would to be to research, research, research! I'm sure you can find someone on YT that can recommend a breeder to you, but defitnitely don't adopt a puppy until you've visited the breeder. And please don't buy a puppy from a puppy store - you'll just be supporting puppy mills, and that's just no good.
Anyway, good luck! I know how exciting of a time this must be for you.