You must be 21 years old to shoot pistols and 18 years old to shoot rifles or shotguns. However, children 10 years and older may shoot as long as they are under the direct supervision of their parent or legal guardian.
No, you cannot.
Yes, but only after passing a Fox Valley Shooting Range Holster Draw class and at designated times.
Yes, unless you have a state issued ID from a state that does not require a FOID card or are under the direct supervision of a FOID card holder that is at least 21 years old.