Start with this project:
G.A.C. BROS INTRO
Then, go along to learn and have of fun with the G.A.C. BROS.
I have 3 rules:
1. Do NOT remix any project here.
I want the code like is.
2. Do NOT add to the Nano gets Grounded Series studio.
Nano never in this series gets in trouble. He's the A in G.A.C.
3. Do NOT report this studio.
I don't think it will come back. I never report anything, not even pain-in-the-butts.
Follow them all.