It is the start of January and my parents, sister, and I have decided that we want a puppy (7-8 weeks old). To allow adequate time to train and be with the new puppy, we plan on getting it in early June, when school is finished and we can be home to attend to him/her.
Any good advice on what we should do to prepare for this new puppy?
Crate train, crate train, crate train! Nothing spells "accident" like a tiny puppy in a big room. It'll stress them out and it makes them even harder than they already will be to train.
Secondly, you need to make sure that everyone is consistent with the rules that you have for the puppy.
Because Yorkies are so small, they often start wandering through your house and forget to eat or drink. This can cause hypoglycemia which means that the blood sugar level has dropped significantly. You'll notice major signs in your puppy like lethargy, an unwillingness to play and other things that are uncharacteristic of puppies. To prevent this (if your puppy won't eat), you could add mild amounts of something wet (like Cesar dog food [not reccomended, it's so bad for your dog], canola oil, vegetable oil or something like that. It just gives the food some more flavor.
I reccomend that you take something to the puppy before you go to buy it (a towel or a teddy bear) that can get covered in a "home smell," it will make the move to your house a little less stressful for puppy.
When you bring puppy home, make sure you keep him/her on the puppy food he/she was on wherever you got her from. Changing the food will cause digestive upsets followed by diarreah and/or vomiting.
When you go to change puppy food, make sure you slowly wean him/her onto the other food. I really reccomend going to a pet food store as the dog food that is sold in grocery stores is made mostly of corn and corn flour. Corn in general is hard to digest and causes the food to lack nutrients in puppy's diet.
Make sure you have all the necessary supplies at home before you go get your puppy, there's nothing like stopping 50 times on the ride home to stress the puppy out more.
When you buy a collar, remember that your puppy will be tiny so I reccomend a cat collar or one specifically designed for toy dogs. Normal "small" collar sizes are meant for fully grown toy dogs.
When you take your puppy to the vet, don't put it on the floor! That's whre all the sick animals sit and if puppy doesn't have something before (s)he walks in, (s)he will when (s)he walks out.
Make sure you puppy proof your house. Puppy's get into everything! Make sure that any plants within puppy reach aren't poisonus! http://www.ttlntl.co.uk/2/Health/poisonplants.htm
I know this wasn't quite what you asked for but it's all stuff you need to know. I know this from working in a pet store.

more rosie
our yorkie puppy playing and eating her food. shes only a month old! she wouldnt eat, but everytime i slid her food across the floor she would eat it up. bad move, now shes all grown up she barely eats from her bowl
These babies have gone to their permanent homes. I had so much fun with them while they were here!
this is my baby paris again lol just playin with her toys
Puppy’s first meeting with cat
Mini Yorkie “Heff” doesn’t put up with Dax’s Butt sniffing ways.
Enjoy! God Bless!