Here are two sites that are filled with information about safety and all sorts of information to help you raise a healthy yorkie puppy:
Yorkshire Terriers - Yorkie Puppies - Breeder Information - Training - San Diego Alex's Yorkie Care Frequently Asked Questions
Bluebelle was explaining that a yorkie should be carried with a forefinger and your thumb wrapped around the front leg. Many yorkies have died from jumping out of people's arms.