My 11 year old golden is named Dakota.^^^ (he yawned right when I took this pic)
I would make sure that your golden is socialized to be near other dogs so that he won't go crazy around other dogs when you are at a park, etc. I would also get your golden accustomed to car/truck travel. I know a lot of people who didn't do this and their dog gets sick every time it gets in the car.
The most important thing to know about goldens is that they remain in the "puppy stage" longer than any other breed. This can last 2-3 years. That's why you see a lot of 1 or 2 year old goldens for sale, abandoned, or given away. Your golden will be very energetic during this stage-be patient. There is a saying about goldens that rings very true, "a tired golden is a good golden". You should walk, play fetch, swim, or do some other kind of physical activity with your golden every day. This will make him want to rest and not be overly wild when he is indoors.
The link below is a good site for golden retriever enthusiasts.
http://www.topgoldenretrieversites.net/