Quests are a way to guide you through the progression. They are a way to help you learn about things and the world around you.
Quests are split into groups. Each group has a set of quests that you can complete. You can complete quests in any order you want, but some quests may require you to complete other quests first.
You can change this file in the tutorial.html file in the Heracles config folder.
Happy Questing!