I started an apprenticeship when i left school, as a precision engineer and spent the first 18 months of it sweeping the workshop and going to the shop, despite complaining about wanting to engineer!!!. Like someone else said ,what if the guy/girl your supposed to be learning from isn't interested in you, or your prospects. I did a course on Tiling in order to change my dead end career and now work for a very reputable firm who do full bathroom installations, with plumbers, electricians & joiners, all time served, on the books, and if your not up to scratch,with the standard of work they expect, then they are not long in telling you.I don't profess to know all there is to know about tiling, but then again , who does? Is anyone going to say that if you do your apprenticeship that it guarantees that it will cover every situation that you will ever come across in that particular discipline?, or if you find a new problem will you ring up your old journeyman and ask him his advice ?, or would you get your head round it and try to come up with a solution to it on you tod? Every day is a school day for me!