As long as you don't ride on the street, you use proper safety gear, it's ok with your parents, and you can walk you can start riding any time you can get a bike and a place to ride. Just ask your neighbors first before you ride on their property. Make sure you use proper safety gear (a helmet is a good start) and make sure you can operate the bike safely before you ride.
Yes
no
yes
Fuel mileage is about 25-30 MPG depending on how you ride it.
I think a electric pocket rocket is better
You have to be 10 years old
As long as the owner of the private property allows it, it is legal.
Your pocket rocket is leaking gas because your fuel line is not switched off or you need to clean your carburetor you might need a new one.
93 octane
The dmv
ride a bike.
in hills