I have for a while now, wanted to get a firearm, specifically the Ruger SR-22 to learn the basics about handguns and take up a plinking/target practice hobby. It would give me something to do between work and school, and would introduce me to a new set of acquaintances and mentors.
For the record I am 18, and I am aware of the laws regarding firearms purchasing. At this time I am not worried about being able to obtain the firearm.
My parents, my mother specifically is most of the time a huge nut. Myself legally being an adult, she doesn't allow me very many privileges or allow me to do anything that might be even remotely dangerous, even though I am a very intelligent and hard working individual with not a single "bad" thing done in high school etc. Thus, having a gun in the house is so far of of foreign thing, she laughed at me when I enquired about it.
I don't intend to use a .22 handgun for self defense or even open carrying. I want to learn the basics of firearms, and how to fire them, clean them etc. I need some suggestions on how to convince them or help them understand what I want to do. For the record, because I am an adult, I am legally a tenant on the lease, so I am legally a head of household. By technicality I can bring whatever I want into the house, but I want to respect my parents wishes for the most part.
Some ideas I have thought of:
A gun safe.
Keeping the gun unloaded whenever in my car/house/safe.
Not even having ammo in the house (purchasing it at the gun range).
Any other ideas?

