Quests cover the Main Questline which is the core over-arching plotline of the game, the Side Quests that unlock as you enter new Map Zones and Territories, and Daily Quests that unlock as you complete certain requirements.
There are a number of locations throughout the game that allow you to fish (if you've purchased the required fishing rod from one of the stores), and on top of Energy restoring fish there are a few Custom Items that can be gained from each location.
Periodically, you'll find Map Zones that lead to mini-maps. These are areas with their own unique Questlines that are separate from the rest of the game - they can be completely ignored if so wished, but mostly contain unique and highly useful Weapons as the reward for completion so are worth doing.
After completing the Tutorial, you'll find in Haven Castle a room filled with sixteen treasure chests. In this page contains not only everything you need to know regarding this room, but also exactly what rewards each chest gives you.
By far one of the most important of basics, this is a simple page with the complete World Map shown. Click on any Map Zone and find yourself on a page with any and all the information about that Zone - where you gain access to it from, what Zones it connects to, what the unlock requirements are as well as any Quest information as well, and everything else as well.