1. First you need to create an account. The account is used to join the game. Account creation is below.

2. To start the game you need the client version 10.1.0 (49474).
You can download the minimal client here .
If you already have client version 10.1.0 (49474), download the launcher here and place it in your client's root folder.
The game can only be started with Arctium WoW Launcher.exe.

3. Open the World of Warcraft directory. The default directory is "C:\Program Files\World of Warcraft". Once you find it, open the directory named "_retail_" and then go to the directory named "WTF".

4. Open the Config.wtf file and change the line: SET Portal "EU"