I would suggest that you look and see if there are maybe some local or nearby breed clubs? See if there are agility classes or handling classes nearby and see if you can contact some members there. What about the breeder that you got your girl from? Or your boy (if you have one)?
In a pinch, it doesn't even have to be a Yorkie breeder...any small breed breeder will be better than nothing. Definitely have your vet on standby.
Don't get me wrong, I'm glad to help get you info and answer questions as best I can as are the other members here...but it's really unclear what you need to know, exactly.
What advice has your vet given you?
Do you have a whelping area ready and available to her?
Are you prepared for supplementing her calcium after the whelp?
Do you know the signs that she is starting labor? Do you know what signs of danger are during labor?
Have you had the vet do an xray to determine if any pups look to big to for her to deliver naturally?
Do you have whelping supplies on hand? If so, what do you have?
What gaps in all of that do we need to help fill in? What out of what I listed are you still unsure about?
