The quests are up! By doing the quests you can get valuable stat potions which power up your constitution and wisdom. To start the quests you need to kill big monster bosses, you will get items which can be given to town people or can be used to craft new items. So you can trade items for other items, sometimes you also need to escort people to other places. In the pub in Bomboria the people announce when they need something - go to the counter and read the announcement list carefully.
At the end of the quests you get keys for treasure chests which contain valuable things.