It helps to read a lot about Yorkies but it also takes it to the next level when you can visit with them at a playdate or something of the like. Just be careful because you won't be able to resist afterwards. LOL
You can also go to a dog show to see the Yorkies.
Here is a link to finding the best possible breeder.
http://www.yorkietalk.com/forums/bre...e-breeder.html
Good luck!