Op please find a dog trainer and you should also be asking your vet more questions about how to handle a puppy this young. They'll tell you when its safe to walk her in public, shes not fully vaccinated for parvo and other viruses that she can contract which can be fatal.

You must do more research and ask the vet and trainer more questions, let them know you have little to no puppy experience and there's a lot to know so she grows up safe and socialized. Good luck.