Good for you, I'm glad you decided to take your time and do your research, keep in mind your big picture.....go slow, ask questions.....and remember to have fun.
If you can attend some seminars...on canine genetics, breeding, whelping, handling.....oh go to yorkie club and order some DVDs on grooming, training.....etc.
http://www.yorkyclub.com/en/Products.asp?cat=11