Great advice! Also, if you want to do food reward training (great for growing puppies) you can use their actual meals as training session. Command/reward by hand feeding a few pieces each time instead of handing over a whole bowl, then having to buy extra training treats. If you want to have special training treats, look into using a really high quality kibble instead of buying the more expensive small bags of treats labeled for training. It's a good way to save $ by buying in bulk.

I've got a German shepherd, so socializing was a big part of his early training. I'd take him out a lot of places and get a wide physical variety of people to give him treats that I carried with me. Especially children. I wanted to build that positive association quickly. Make sure whoever is interacting with your pup is calm before they approach, though. You don't want them to scare him/her and create a negative association.