You know how when you get a bunch of peasant migrants, and you really really need a master weaponsmith, so you spam unimportant projects at him until he's half-decent at making what you need? Training.
The best training techniques would:
1. Not use up any important, scarce resources
2. Produce few, if any, useless low-quality products; or else produce low-quality products that are easily got rid of.
3. Progress quickly
4. Require little micromanagement
Here's what I've discovered (mind you, I'm an absolute newbie and you guys probably already know this):
Carpenter: Make bins and barrels. It doesn't matter how well-made these are, and you'll need them anyway.
Mason: Make stone blocks, which don't have a quality.
Miner: Mine out soil, clay, sand, etc., because that's faster.
Butcher: Slaughter livestock, rather than butchering hunters' kills, because the butcher can go at his own pace.
Woodcutter: Turn off wood hauling while he trains by cutting down everything in sight and your haulers can retrieve the logs. I much prefer underground trees in a cleared soil/clay/sand level because on the surface, my woodcutters keep getting spooked by foxes and badgers.
Cook: Have him make lots of tallow, to get a start on cooking skill
Engraving: Smoothing stone.
What are your training techniques? I have some trouble with metals; they're scarce enough that training up metalcrafters risks using up valuable resources. Which metals are low-value and can be used for training?
If we got a good list of techniques, I think a wiki page on training would be a good idea. Unless there already is one and I fail at finding it.