With the start of the Love is in the air (Valentines day event) there are many quests available to you. Since in the process of leveling an alt this event is great for me. Here's what you can do to get large amounts of experience in such a short time.
1:Questing
If you're horde (like me) start of in Orgrimmar by the Auction house and collect all the quests that are available for the event. The quest to start the chain is
Something Stinks, this quest is provided by Detective Snap Snagglebolt. Now at my level (level 38, no heirloom gear) I received an average of 2800-3500 exp per quest, which is pretty fair I have to say. If you have both exp giving heirloom pieces and will probably be a decent amount more. The majority of the quests are simply just go here and talk to someone and come back. It's pretty common sense, but for someone who necessarily doesn't take part in World of Warcraft events, but its something to consider.
2. Rewards
Plus once you receive enough tokens, you can talk to the Love is in the Air vendors in each main city and receive helpful items such as Love Fool, which is useful in tight situations because it pulls aggro off of you and multiple potions that increase certain stats a good amount.
Enjoy this fine event and be sure to follow these steps. Feel free to comment. :wave: