My family had a beautiful Golden Retriever and now have a chocolate lab. Most labs think they are puppies for around 2 years. Take pictures now because she will grow fast.
Labs are relatively easy to train if they want to be trained but have a mind and personality of their own. The Golden kind of ruined it for all other dogs because she was sooo good and smart.
Watch out for parvo (keep her away from other dogs and their poop until she can be vaccinated.)
Labs also love to fetch. You will be doing this often and for what seems like hours on end so get used to it.