How did you get into it, and do you have any resources for this? I've always been amazed with firearms from an engineering standpoint for the same reason intern

How did you get into it, and do you have any resources for this? I've always been amazed with firearms from an engineering standpoint for the same reason internal combustion engines amaze me: we're harnessing explosions in a powerful, consistent way; so damn neat. I'd really like to try my hand at building -- or at least restoring -- guns. Could always use a new hobby.