Motor Shield Batteries

Hey, I recently bought an Adafruit Motor Shield as a beginner. I also bought a 6-12 V DC motor. So my question is, how much power supply should I use? Currently i'm using 6 AA batteries(total of 9V), but the motors arent doing anything. I'm not sure if its because the programming or the power.

I don't know if this is cross-posting, but it seems that you have a single problem. So it would be better if you started a single topic, instead of four.