Congrats on getting your new baby. Your life will be filled with Yorkie love and Yorkie attitude. Haha. As far as diet, I really have enjoyed home cooking for my girls. At first I thought it would be too much work. But I ended up making 2 weeks at a time so it's not so bad. Petdiets.com is a great place for recipes. However I would make sure they are ok for such a small puppy. I have one with tummy issues so the home cooking works well for us.
My next advice is to find a great vet if you don't have one already. These little ones can go down fast when sick so having a vet that you trust is important.
Get a good camera because this baby is about to steal your heart and run away with it.
Last, get a good bed. Check out the Yorkie Haven Rescue Cloud 9 bed. I have three for my girls! I can honestly say they LOVE it!
Again, congrats on your new addition. And welcome to YT!