I would find a kennel club in your area, they can help you alot.
there are confirmation classes you can go to and watch others that are training their dogs for show.
Also try the
www.ytca.org and see what Yorkie Show breeders are in your area. Here is a link to AKC a beginners to show link.
http://www.akc.org/events/conformati...ed_showing.cfm
If you know what type of Yorkie you like, I would talk with and get to know those breeders and form a relationship with them.
Deana
Prestigeous Yorkies