Puppies sleep a lot. At 2 months of age, they average a total of 20 hours per day. Even as an adult they may be sleeping over 12 hours a day. 

• First set of teeth are very sharp and they want to chew on everything. Start letting them know right away what it is OK to chew on and what is not. If you are playing and feel teeth, push them away with a stern “No”. You may to do this repeatedly but they will get the idea. When you catch them chewing on a shoe, give a stern “No” or “Leave it”. 
• Then give an acceptable chew toy.  My other dogs have liked rope toys, rubber squeaky toys, stuff-free plush toys, yak cheese and billy sticks. I try to avoid rawhide, especially in younger as it tends to swell in their stomachs.

Around 4 months the puppies lose their puppy fuzz. This is followed by 6 months of “puppy uglies” with a thinner coat until the heavier adult coat comes in.

• The idea of socialization is helping your puppy become acclimated to all types of sights, sounds, and smells. This can prevent a dog from being fearful of things like children, riding in a car, strange dogs or other animals.
• Before leaving our home, your puppy will have spent time interacting with dogs of different sizes and ages, people and cats. However, their only trips out will be to the vet and travelling to meet you.
• Now is the time to take them places to meet all sorts of people and other dogs, but WITH CAUTION if vaccine series not yet completed. Consider carrying them around to keep off floors and ground. Avoid places where dogs may be that may not be appropriately vaccinated like dog parks and pet stores. Invite others to to visit and bring their vaccinated pets. 
• More ideas at https://www.gooddogsantacruz.com/11-ways-to-safely-socialize-before-your-pup-is-fully-vaccinated/ and https://www.akc.org/expert-advice/training/puppy-socialization/.
• Take a puppy class! It is time well spent with your new family member.