You need an adapter (shown in link) then fill like a normal fill station.
yes
You would have to be a moron to try it and you would damage your marker.
The purpose of a paintball gun is to fire paintball pellets, to mark opponents in the game of paintball.
A paintball marker is a paintball gun. It is just called a marker instead of a gun.
Many of the retail sporting goods stores will have refill stations for your cylinders. Also, I have seen hardware stores that will do that too. Where did you buy the gun? Chances are that the store the gun was purchased from will be able to refill the cylinder for you.
It depends on them. But they do have the equipment.
No. The state of Ohio did not invent the paintball gun.
No, do not expose your paintball gun to water.
A paintball gun is several magnitudes stronger then a Nerf gun. A paintball travels at around 200 mph, where a Nerf gun is around 10.
11 to play at fields, 18 to buy a paintball gun.
yes. you can ship a paintball gun anywhere.
No. Nothing dissolves in the process of a paintball gun firing.