No, you must be 16, have at least a drivers permit and its a street legal vehicle that is appropriately registered.
no
Legally no but otherwise yes.
on your driveway
Yes, completely safe. If your 8 year-old can ride a bicycle, he/she can ride a dirtbike.
yes
yes
no
Yes
a bike.
Experience and common sense can best answer your question. My son is 12 and he rides. He has been riding since he was 6. I got him a super pocket bike when he turned 11 and a mini one when he was 6.
Thirteen year olds can only ride bikes with motors attached on private property in California.
Yes, but good luck fitting on it ;)