The best way to handle all addons is by downloading wowmatrix. wowmatrix is a program that will automatically handle all your addons. It will also update any out of date addons. You can also search for & install addon's from the wowmatrix interface. Click here to visit the wowmatrix website.
To install any of the addon's below just copy the addon name into the wowmatrix
search.
Auctioneer Advanced
Auctionator
Baud Bag
Cartographer 3
Gatherer
iGuild Trade Skill
Quest Guru
Quest Helper
Kara Ready
Omen 3
Healbot (For Healers)
Ventrilo (Voice Comms)
Deadly Boss Mods
