What both folks above said. Personally, I'd recommend a Ruger GP100 like mine for a DA centerfire. (Love that gun!) Smith makes some very nice .22 DA revolvers.
When I take newbies to the range for the very first time, I always bring my SS Single-Six. It has to be cocked every time, giving the shooter time to think about what she/he is doing, looks non-threatening, and is loads of fun to shoot.
This person needs to read lots, and aquaint himself with the very serious subject at hand.
Basically, I'd say either a DA .357 revolver. It'll also shoot .38 special, which is not too expensive.Quality examples can be had cheaply used. For an absolute beginner, a .22 DA or SA. No recoil, cheap ammo, and you'll probably want to keep it even after you've graduated to something bigger.
Best,
Jeff