Terminology for expert who didn't go to college to study it

What's the right term/name for a person who is an expert eg. a smith, a plumber, electrician, a writer, clerk etc but he or she didn't went to college/university to study that particular course. And how should they describe themselves when writing a business/application letter?


Solution 1:

I think the word you're looking for is self-taught

having knowledge or skills acquired by one's own efforts without formal instruction
a self-taught musician

One wouldn't usually use this term in a title, but you might mention it in a resume/CV, to indicate your initiative.