>>3463First thing you really need to look into IMO are the legal requirements. For example, in my state if I wanted to get into it, I'd need to become a licensed locksmith first, which means taking some specific training and exams, otherwise all the tools of the trade are illegal to own. Then you at least know if there's a mandatory first step to clear before anything else.
You almost definitely don't need any fancy university degree for physical stuff although there are some that might be useful if it's not a cost to you.
