While the attempts to find your adopted daughter will always take precedence, you are a witcher with a history of tracking and slaughtering the hardiest monsters throughout the Northern Realms. There is no reason why you can’t undertake some side missions that benefit the villagers of the realm, as well as your coffers.
Witcher contracts involve either stumbling upon evidence of a monster’s activity (its lair, prints, or evidence of bloodshed and combat), or by reading notices requesting your help and bartering a good price for your services.
Beware that the monsters you hunt during these contracts are tougher versions of the same enemies you may meet during your travels. However, they are susceptible to the same oils, potions, bombs, and Signs as their lesser brethren. Some of these creatures are truly dangerous, so you may consider checking the level in the quest menu to ensure you’re up to the task! As always, a comprehensive study of this guide’s Bestiary is most helpful when preparing for these quests.