You have to post on another site to get whitelisted on the private competitive servers where teams are generally formed and where teams practice. I posted my name a week ago and still have not got in. It also looks like most of the teams that are around already are full.
Otherwise, send me a friend request and if all else fails we can start our own team, since I am getting tired of waiting. My TA name is Crypto, post your name and I'll add you. (Anybody else looking for a team feel free to do the same)
It seems like just being in a team and signing up for a tournament will instantly get you whitelisted, so starting a team of our own might be the easiest option. --- i3 540 / HIS 6850 1GB / 8GB GSkill 1333 / 80GB Intel SSD / 1TB WD Black / Z9+ Case /. Win7-Linux dual-boot
Update: just found this section full of teams. Disregard what I said about creating a team, I will find one to join here: http://forum.hirezstudios.com/phpbb/viewforum.php?f=268 --- i3 540 / HIS 6850 1GB / 8GB GSkill 1333 / 80GB Intel SSD / 1TB WD Black / Z9+ Case /. Win7-Linux dual-boot