The more people your dog meets in a pleasant and positive environment, the better socialized she becomes. Your dog first must get to know you and the other adults in your household. These introductions need to be positive, friendly, and not too overwhelming.
Your dog is learning about you as you take him around the house and yard, showing him his new environment, but you also need to spend some time focusing on your dog on that first day, so that means:
Sitting on the floor with your dog
Letting your dog sniff you
Petting your dog
Talking to your dog
Showing your dog some toys
Get down to your new dog’s level to get acquainted.
Try to figure out what your dog likes and doesn’t like — throw a ball, offer a treat, see how she reacts when a door slams.
One new person at a time is plenty for your dog to take in. Don’t gang up on a new puppy or an adult dog new to your home; let your dog sniff and investigate other people and if she seems overwhelmed or nervous, take it slow, or save introductions for later. If she seems interested to meet everyone, then give her that interaction time.