I think what hes talking about is is a survival situation( he said "just in case the day ever comes when I need to.")if thats the case, I doubt the local game warden would have the time to track him down, he would be to busy taking care of his own needs.As far as learning now, I would suggest reading books, practice setting the snares, learn where the best places to set them are, learn from someone that already knows.
Raydarkhorse, Hacksaw and Blaze hit the nail on the head.