How do u add add-ons in WOW?

First, download Winrar, it is pretty much a must have for extracting files.

http://www.rarlab.com/download.htm

After you download it, download quest helper again and open it, it should open in Winrar, click the extract button near the top of the screen and extract to it your Program Files(or wherever you put WoW)>World of Warcraft>Interface Addons, then go in the game and go to the character select screen, you should see addons in the bottom left, click it, make sure it is enabled, and if it says out of date, click load out of date addons.

I also suggest Carbonite instead of Questhelper (does the same thing, but better)

http://www.carboniteaddon.com/

open the wow folder

go to interface> addons> then just drop it in there, when you log into the character selection make sure you have it enabled. if it says you dont have the most recent version, choose to load out of date addons.

log in and do the quests

Hello,

Check this page on WikiHow. It has good info to help you install any addon:

http://www.wikihow.com/Install-World-of-Warcraft-A...