By the town hall door
The notice board
Jobs posted by the people of the realm. The reward is held by the town the moment a job is posted, so every one of them can pay. In the game: /contracts to read, /contract take <id> to take one, /contract post <reward> <the job> to post your own.
Open
The board is bare. Post the first job.
Quests from the townsfolk
Besides the board, four people in town have work: Bailiff Radim (your first steps, and firewood for the watch), Father Ondrej (herbs for the sick), Widow Ludmila (errands) and Overseer Bohuslav (ore, hides, proving your hands). Talk to them in town; your journal keeps the rest. /quests lists yours.