Your puppy is constantly learning about the big wide world, and it's important to provide them with positive experiences with a variety of sounds, people, animals, surfaces, and handling while they're young so they have less fear later on in life. This is called Proactive Exposure Training (or Socialization). Start "low and slow, short and sweet" when beginning this process with your pup, meaning low volume for sounds, further distance from people or other animals, and slowly increasing the duration of the interaction depending on your dog's reaction.
Being able to read your dog's body language can help you evaluate how they are feeling about what is going on around them. Visit our Decoding Dog Body Language Resource Page for books, videos, and other resources for learning how to "speak dog."
Below you'll find more resources to help you socialize and condition your puppy.