WOW Power Leveling: The average amount of time for a player to level to 20 is 80 hours
Advancing Your Character Introduction - Here you will find WOW Power Leveling tips and advice divided by area. This section isn’t a walk through, but rather suggestions on the best way to save your money and level the quickest; while still being able to have fun.
A few areas are a bit more in-depth where appropriate, such as Amnoon. Fire Magic is the quickest way to level and therefore I would suggest specializing in that during the first few areas. The average amount of time for a player to level to 20 is 80 hours, or about two weeks, depending on the amount of free time.
Afterwards you’ll have enough spells at your disposal and a good enough feel for your character to know what will and won’t work -- even if it’s by trial and error
Ascalon Levels 5-9: Now that you’ve made it to the real Ascalon, it’s time to get the real adventure started. Explore the town a bit and learn where everything is located.
Be sure to stop by the Armor Crafter and take note of what you need in order to craft the Pyromancer armor. I suggest this over element list armor since you’ll be facing the Charr, some of which deal fire damage.