Lets Play Tibia: The Old Widow (ENG)
Of all the tasking monsters at my level, that provide a boss, Giant spiders seemed like the easiest. They aren't overly difficult, and there are plenty of them, and they are profitable too.
however, the Old Widow seemed pretty dangerous. To be fair, she probably would have killed me 20 levels ago, but now that i know i can take her, i'll be tasking these some more.