It depends on where you live and what the state and Federal Laws are for your particular situation.
To get a gun license you would need to go into a gun store in the town you live in and ask for the information you need.
18
No, but if you started waving it about in a public place, you risk being shot dead by armed police.
yes it is illegal to own a sawed off shot gun in pennsylvania...as far as i know its illegal in every state of the US
Each range has its own rules.
you really need to be like 13 because no 1 will trust you. if your parents let you get a bb gun at age 10 and you shot some 1 then your parents are really dum..!
No.
Federal law (and most states) require you to be 18 to PURCHASE a shotgun from a dealer. You may OWN a shotgun at any age, but if under 18, will need the consent of your parents.
You need to find a lawyer who specializes in firearms law to get a correct answer.
You don't need a gun license if you are 25 but if your under 25 you do need a gun license
You need to be an adult.
No.