Missions and Quests

If you are playing a Roleplaying character, much of that hero's life will be taken up with missions and quests that give experience, provide you with valuable loot, and allow you to explore the full scope of the rich storyline running through the game. Missions and quests provide you with the goals and objectives you must meet to advance the story and grow into a legendary hero. http://www.guildwars.com/gameplay/combat/missionsquests/