What a cutie!! Congrats on the new addition!

As Molucass said, avoid the dog park until the pup is about 4 months old (that is about the time they have had all shots). Puppy Kindergarten is a great place for socialization as well.

I read somewhere that a puppy should meet 100 people in their first 6 months. As many dogs as possible at an early age is good too...your dog can never be too socialized!