Hi, I have a 6 month old Golden Retriever. My suggestion to you would be only let your dog meet new people while on leash. Step on the leash and only give her enough slack so she can sit or stand up, not enough so she can jump up on people. When she sits down on her own pet her like crazy, if she tries to jump up have the person back away. Eventually she should sit down to be pet, this will take a while so be patient but if she never gets attention for jumping on people she will should stop the behavior. I would suggest getting a training book and trying the training yourself, there are a lot of really good books out there.
The leash should also help with the jumping up and biting.