One of the best way to learn about guns is to get a inexpensive air pistol to see if you enjoy the "shooting sports". Safety-wise, treat a air gun as you would a "real" gun...as if it was loaded, and cause real harm or loss of life. A NRA gun safety course would be a good idea for someone like yourself.
Howdy, gun safety is rule one. Before using or owning a gun learn gun safety. Find a reputable beginner gun safety course. I take newbs to the range but we never set foot on a range until they can recite the basic safety rules and explain them.