Yorkie puppies require a well balanced diet, this can be provided by a good quality puppy food. It is very important to think about quality...and to know what ingredients are in the meals. Usually, if one tries to save money, quality goes out and fillers come in. In general... A 1 lb. puppy needs 1/2 cup of food each day, a 3 lb. puppy needs 1 cup of food per day and a 5 lb. puppy needs 1 and ¼ cups of food.
Young puppies sleep a lot. On average, a puppy will sleep 13 hours per day. However even 18 hours is not abnormal. You will want your new Yorkie puppy to be as comfortable as possible. Investing in a high quality puppy dog bed is recommended. It is also recommend to lay down baby blankets in the bed, so that if your puppy has an accident, you can wash the blanket and put another one down.
It's always a good idea to take a new puppy to the veterinarian you've chosen as soon as you can after getting them home.
It is important to note that very small dog breeds such as the Yorkie can be easily injured when jumping off of furniture. It is suggested to have doggie steps or ramps from bed & sofa to the floor if your little one has a habit of jumping up and then down. If not, you will want to be sure train your puppy to not jump or climb onto objects that leaping down from may be harmful to the knees and/or hips.