1) Don't be careless. Follow storage regulations and use common sense. Don't tell strangers on downtown street corners that you keep a bunch of guns at home. Sharing your hobby with your coworkers is acceptable, unless you work for a drug dealer or something.....
2) Packages containing firearms are always shipped signature required from retailers.
3) The government gun control bureaucracy was concocted specifically to be a pain in your rear end. If you don't believe me, look up some Allan Rock quotes, he was the guy who designed most of the system and flat out admitted, in public, that his new gun control scheme provided absolutely no element of public safety. It was strictly to discourage people from legally owning firearms.