Older son wanting to hunt for first time

I was raised hunting and shooting from an early age (I think I was 5 when I first shot a .410). My house growing up was full of firearms and most weekends spent either camping with Boy Scouts or hunting during season.

I got away from that lifestyle in college and never really got back into it, though I've raised my kids as avid outdoorsmen (hiking, fishing, paddling, camping, climbing, snow sports, mountain biking, etc..). My youngest son is 18 and going away to college next Fall. He's now really interested in hunting, but he's never even really been around guns, and I feel really negligent as a parent for never introducing him to firearm safety or really anything about hunting.

Any thoughts about best practices for introducing him to firearm safety, proper hunting etiquette, etc.. ? He was pushing to go on a duck hunting trip with some friends, and there was no way I was going to just let him take off with them without feeling confident that he knows how to properly handle a gun and keep himself and others safe while hunting with them. For me, it was just second nature as I was raised that way... but he's now 18 so it feels like there is just so much unspoken and unwritten stuff that he has no clue about. I feel like a shite parent, as I never really anticipated him getting into the hunting (he was a vegetarian until recently), but here we are. I want to empower him to pursue the interest, as I think he'll enjoy the hell out of it, but I just want to go about it the right way. Thanks for any advice!