My recommendation would be for him to do a skills test to see what he is good at, these are available commercially. I don't know how it works now but at one time the Military would do a skills test without an enlistment commitment, that may be well worth him checking into just to find out where his skills may be.
My point being that there is no use in trying to be an electrician, HVAC, welder or any other trade field unless he has a bit of ability in that particular field. Chances are if he goes to something that he has some skill in then he will be happier in his work and will be more likely to be successful in what he does.
drover
