How to teach Guitar

I pulled out my guitar today. I showed them how it works REALLY briefly... just defining stuff and why it's there. Then I gave them the rules, no turning the white knobs at the end and no hitting hard. Then, they were allowed the freedom. Callie instantly took like August Rush and started making overtones and drumming and strumming and testing it out. She took note of where it was louder, where softer, where higher pitched, where lower pitched. With pick... without pick. Up and down the bridge. She spent an 1/2 hour independently on it. It was amazing to watch! She can learn so much if I just keep my BIG OLE MOUTH SHUT!!!