Exactly my opinions, as a breeder of the Golden Retrievers.
Short daily walks more for training than for exercise!
Edited - couldn't work out how to quote BelgianPup's post, but that is what I was referring to - it summed up my thoughts.
Usually 6 weeks and approx 12 weeks of age. Some vets also advise on a third vaccination.
Then at 12 months of age and yearly (or 3 yearly they are now advising) boosters.