I think what @Gabe_Z means is that you provided him with the link for ATC Training, which is only for those who have attempted a written exam. The other link, the ATC Recruiting, is indeed the right place for starting the IFATC journey.
@Aegaeus_Mengsk, as long as you’re grade 2, you may control on the training server. However, I implore that you read the ATC Manual and watch the YouTube tutorials beforehand, in order to provide a good experience and to keep pilots from getting mad at you. Good luck! :)