Windows Guide

1

Download the World of Warcraft client if you don't have it. (Downloads)
2

Create a new account (here).
3

Navigate to ..\World of Warcraft\WTF\Config.wtf
4

Open Config.wtf with Notepad or any text editor.
5

Replace the text inside with SET realmlist "logon.stormgarde.org" then save.
6

Start the game using WoW.exe in your World of Warcraft folder, login and play!
7

Log in using your account name, not your email address.