http://eswc.gamecom.plantronics.com/

ENSURE you register an account using the 'REGISTER' button at the TOP RIGHT of the page to avoid Recaptcha problems!

Log in and click 'Home' on the top left

On the RIGHT HAND SIDE of the website under 'Schedule' you should see CS:GO, click 'Register Now' next to CS:GO and create or join an existing team.