Welcome to you and Kato!!
I believe there is a Sticky in the Training/Behavior section about the first 12 weeks for puppies and their socialization, etc.
I love Emily Larlham! She is a trainer and has a great blog (you can just Google her name) and a YouTube channel under the name Kikopup with tons of great videos for all things training wise and it is all positive, good and fun for you and your puppy!!