I was raised.............
At deer camp with a bb gun and a 22. Dad taught me basic safety at about six. When I was 8 I could handle everything we had (quite a few). Shot my first handgun when I was about eleven if I remember correctly.
Funny thing is that dad never had a safe. All ammo was stored in his room and all guns were actually stored in my closet. I was told not to touch them without him and I never did.
In general I was never taught that a gun was scary or something to fear just simply a tool with a purpose. I will do a few things differently for sure with my kids but in the end Dad produced some fine sons with no issues.