I busked in Dublin in the late 60's while going to UCD. It helped pay for the Guinness and Wimpey burgers we lived on. And then busked a bit in NYC and Boston in the early 70's before becoming a full-time performer. It's great training for anyone who wants to try performing full-time. You learn to cope with all sorts of adversity - weather, drunks, idiots, dogs, cops, etc., etc. All the best
Seamus