1. Always treat a weapon as if it is loaded.
2. Never point a weapon at anything unless you intend to kill it.
3. Cleaning a weapon starts with unloading a weapon.
4. Never forget 1-3.
0. If anyone is handing you a weapon, always ask, where is the safety, and is it on? If they don’t know, or it doesn’t even have a safety, strongly consider not accepting it from them. Any gun without a safety is a high risk item, even in the hands of an experienced gun user, because life if full of little surprises.
No, the first rule is to have fun!