Every state, city or country has different laws about BB guns so it is best to check with local law enforcement or city ordnance's to find out about where you want to shoot. In most places it is legal to shoot a BB gun in Calif, but check first.
Provided you comply with all applicable laws; yes.
yes
You local police can tell you.
No.
Air Soft guns. Yes
Well it really doesn't matter,you just haved to have adult supervison
No. it is not.
yes
yes that's the good thing about air soft guns their legal anywhere
no any kind of gun is illegal there
There is no licencing anywhere for airsoft guns.
airsoft guns are NOT designed to hunt with. They are considered toys.
If you shoot at your property on your property, or with the owners permission you should be fine.
I don't know about Canadian airsoft stores, but I know that most airsoft in North America sell Canadian-legal airsoft guns.