The Quest Tracker Arrow is an arrow that will appear at the bottom of your screen indicating the direction you need to go for the quest you are currently embarking upon. Press Ctrl-T on your keyboard, and you will see an arrow at the bottom of your screen indicating the direction you need to travel, and the approximate number of steps it will take your Wizard to reach that destination!
Not all quests qualify for the arrow, some things you just have to find for yourself, young Wizard.
Having trouble finding what quest you need to do next? Looking for something new to do? Now you can simply press a button and find a nearby quest!
When you press the Quest Finder Button in your Journal the Quest Helper arrow will now point to the nearest available quest. Quest Finder will look for quests within your current area, and then expand to the current world you are in. If it doesn't find any quests in that world, you will need to move to another world and press Quest Finder again.
When you use Quest Finder, a window will appear telling you where to go and who to talk to, and the Quest Helper arrow will now point to that location.