It is a common view among players that doing quest is boring. That is because you count on it to bring you Atlantica online Gold, and the gold rewarded is far enough than you need. Well, with the following guide, you probabley could be interested in the quests.
The first efficient way is to complete regular quests you didn't do prior to turning level 70. If you do all of the quests in Netherstorm after hitting level 70, you can get as much as 2000 Atlantica Gold. For me, I like to save Blade's Edge Mountains, Shadowmoon Valley, and Netherstorm. Usually I don't do all of the quests one after another, but when I am bored with other Atlantica Gold making activities I go back to the zones and knock a few quests out from one of the quest hubs.
The second way is to do the daily quests. These involve everything from Cooking and Fishing dailies, to Dungeon and Heroic Dungeon dailies, to PVP and faction specific dailies. Basically, these are quests you can do over again once per day each, up to 25 total as of patch 2.4. Now you can get lots of cheap Atlantica online Gold and the bonus gold based off the amount of experience you would have earned for doing the quest.