Have you checked with people in your area on the YTCA site? Here is a link for you...
Yorkshire Terrier Club of America About The Club
I have read where many of the older pro's on Yorkie Talk have referred newbies there. I hope that helps! I am a new Yorkie Mom myself. I found our girl through a reputable breeder by contacting our vet. He helped me to find her and I feel we made the right choice with our breeder.
Good luck to you!