Where do you do this hat quest I keep hearing about? And also where in Windurst can I get signet cast? I've talked to a bunch of NPC's and they don't seem to cast that spell at all.

Also a way I like to get money is at the Aurastery. In one of the rooms someone (I forget their name) is looking for a bird feather and a 2 leaved mandragora bud. When you brign those 2 to them (fairly common items too) they give you 250 gil. That's my favoritest way to earn money fast.