How does someone train construction really? I mean do you just keep building stuff then removing it or what?

Basically ye, lots of people make oak furniture or items as oak are gd xp, not a bad price and easy to get.

Best way for good ratio to speed/money: Have a bunch of noted oak logs, a saw, hammer, and a fat stack of cash in your inventory. Use the noted logs with your demon butler (he is required for this :wink:) and tell him to swap 24 of them at the bank for logs. Then after he gets back with the logs send him to the sawmill to plane those logs, and when he comes back with the planks send him back to the bank to unnote some more logs, and while he's gone build and destroy 3 oak larders; and when he gets back send him to the sawmill again. This method costs ~8 Gp per xp. There are cheaper ways but they are MUCH slower. Don't bother buying the oaks as planks because it is actually more expensive to do this than to just pay the extra butler fees and sawmill fees.