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...but found it really dissapointing to have the opportunity to watch these 'pro' tilers at work and learn nothing from them.
When I did my apprenticeship, I felt the same thing after a just a few weeks.
More than 90% of what I know about tiling and tiling related things, I've found out on my own, one way or the other. Alot of the things my "teacher" taught me, I've later discovered to be, if not ineffective and limited, then downright wrong.
I started thinking "is he trying to screw me over or something?", but I soon realized he really didn't know what he was doing, or what he was talking about.
The vast majority of tilers I've met, have been the "quantity over quality" type. To actually find a tiler in real life, who can show you tricks and give you useful tips and information, is a rare thing. It's the school of hard knocks for most. 'Twas for me atleast.
Practise, read up on things you're unsure about, test ideas in private, and take your time. It's the only good way to learn the trade properly if no one who can show you the way is around.