There are two major sites that deal with World of Warcraft addons. Curse and WoWInterface (See related links for the addresses). Google code is starting to have more and more addons as well, however, those are a little harder to find.
Download a wow addon manager like wowmatrix. Google Wowmatrix --- Inside your World of Warcraft game folder you will find a folder called "Interface". Inside is a folder called "Addons". Addons provided on abovementioned websites usually come zipped, with the files in a folder with the addon's name. Simply copy this folder entirely into the "Addons" folder. Make sure to quit WoW and restart it. At your character selection screen, at the bottom right, is a button "Addons". Click it to see a list of addons you are using. Make sure all addons you want to use have a tick in the box, and that the box "Load out of Date Addons" is ticked, in case you installed an older addon. Log into your character, and the addon should now be active.
Yes, you can use any addons that a full account can use. There is no limit.
Yes, the Curse website (and Curse Client) is safe to download addons with. However, like all other sites that have ads (advertisements), you can be infected with viruses from the technology that is used for the ads (specially flash ads). This is mostly true for any site that has ads, Yahoo, MSN, MMO-Champion, and others.
Considering WoTLK is 18 GB Normal, i'd keep atleast 25 - 30 gb for catacylsm inclusive of addons
Wow takes about 2-4 hours to download but it will be worth it when you start to play
Download a wow addon manager like wowmatrix. Google Wowmatrix --- Inside your World of Warcraft game folder you will find a folder called "Interface". Inside is a folder called "Addons". Addons provided on abovementioned websites usually come zipped, with the files in a folder with the addon's name. Simply copy this folder entirely into the "Addons" folder. Make sure to quit WoW and restart it. At your character selection screen, at the bottom right, is a button "Addons". Click it to see a list of addons you are using. Make sure all addons you want to use have a tick in the box, and that the box "Load out of Date Addons" is ticked, in case you installed an older addon. Log into your character, and the addon should now be active.
You should download the curse client and download the addons via that, on my computer the addons automatically go to the WoW addons folder located in the interface section of the WoW folder.
Wow interface is good for beginner and curse is the website you use to find addons
In general all you need for downloading and using an addon are WoW itself and a web-browser to download the addon from a third party site like wowinterface or curse. That said, there are addon-control packages like the curse client, which allow you to download and update many addons from a central program.
World of Warcraft, or WOW, addons have different benefits, for the most part, the addons allow players a better gaming experience. WOW addons can be used by players to customize the look of their game as well as enhance player performance in the areas of questing, gaining skills, obtaining achievements, and running dungeons and raids.
Some of the more popular addons are:Boss Encounter ModsDeadly Boss ModsBigwigsBag ModsArkInventoryBagnonOneBagAuction ModsAuctioneerAuctionlite
In order to manually install an addon, first download the addon and unpack its zip file. Everything contained inside the zip file should then be copied into the World of Warcraft\Interface\Addons folder. When you start up World of Warcraft again, click the "addons" button at the bottom left of the character selection screen and make sure that the addon is there and the box in front of it is checked. The addon should now be running properly. If the addon has not been updated for some time, you may need to click the "load out of date addons" option for it to work, but this increases the chance of the addon causing errors.
In World of Warcraft, addons are little bits of code that allow you to do repetitive tasks, keep a database of information, and change the user interface (UI). These addons are free of charge (although you can still donate).
They are addons for a specific class that you play. I play a priest so I get addons specifically for priests to make it easier for me to play my class.
You can download a client from Curse (see related links below) that makes it sooo much easier to download add-ons too. WoWInterface also has a client that lets you download and install addons from their site. Both sites are safe.
Most websites that provide addons will have a backlog, showing earlier versions, or a link to the author's site which usually has older versions. You shouldn't really need them, however, since any official game is patched to the current level, and only playing on non-sanctioned private servers would require older addons.
No, most addons will not get you banned. The only things that addons are allowed to do in game are approved by Blizzard. If Blizzard does not want an addon to do something, they just make it so that addon can not do it.