We took the advice (from the Vet and experienced breeders) that its best to get puppy used to environments and if your garden is safe and secure and not got other dogs roaming then (as ours was) then we took her in Garden and basically carried her everywhere else. All our neighbours used to laugh and call Poppy "Spit the Dog" as she reminded them of that Puppet being carried everywhere.
But we wanted to get her used to the sights and sounds around our house.
We carried her up to the road and let her get used to the sound of the traffic past the trees in the wind - we carried her out at day time, night time etc etc. We were told the more you can get them used to early on the better.
She was not introduced to other dogs (appart from her sister who was in the same position) and we took her out in the car to get her used to that as well.
I think it also depends on what area you live in as to how prevalent certain doggie diseases are but I'm sure someone else will offer some good advice.
Bet you cant wait for your first walk!!
Amanda x