>Where can I get game clients?
Usually on any given servers site, but if not check here:

1.12.1 (Vanilla):
drive.google.com/folderview?id=0ByPTNLduvdC2NzZCLWtNNVZoQ3M
http://thepiratebay.se/torrent/5076223/World_of_Warcraft_Client_-_Version_1.12.1_enUS_-_Windows

2.4.3 (TBC):
magnet:?xt=urn:btih:d9e48b11dc47dd46e40c28521008c8843222bb25&dn=World+of+Warcraft+-+2.4.3+TBC+Ready.&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=udp%3A%2F%2Ftracker.publicbt.com%3A80&tr=udp%3A%2F%2Ftracker.ccc.de%3A80

3.3.5a (WotLK):
magnet:?xt=urn:btih:dd31c5ce1984b183e310196306cb958a4b08243f&dn=World+of+Warcraft%3A+Wrath+of+The+Lich+King+%28WOTLK+3.3.5a%29&tr=udp%3A%2F%2Fopen.demonii.com%3A1337&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Fexodus.desync.com%3A6969


>How do I connect to [server]?
1. Register on a private server that hosts the same game client you have.
2. Copy their realmlist URL. This can usually be found on the main page of the website or on their registration page.
3. Look for a realmlist.wtf file in your WoW folder. This may either be in the root folder, or inside Wow/Data/enUS/
4. Open the realmlist.wtf file in a text editor such as Notepad and paste in the realmlist settings of the server. Make sure it starts with 'set realmlist' followed by the realmlist URL.

>I have set the realmlist correctly but it still connects me to XYZ server/says invalid login info.
Make sure your realmlist is correct and not read only.

>How do I stop my client from auto-updating?
• Start the game with wow.exe - not launcher.exe
• Don't use your email for logging in, use your account name.
• Find the patchlist file in your installation and remove it.