Hi and welcome! I don't have my yorkie yet, but I'll be getting him in a couple weeks. It took me awhile to find one so don't get discouraged if you don't find one right away. Once you do, you'll know when you've found the "right" one.
Have you posted on the "Yorkies Wanted" forum? That's how I found my baby. Best of luck to you, I hope you find one soon! In the meantime, read and learn all you can. I find that I learn something new everyday!