If you were selected to participate in the GGN Fantasy Football League, you should have received an invite by e-mail to join the league. If you have not, please drop me an e-mail. The invite was sent to the e-mail address you have listed on your SB Nation account so check that address if you do not use that as your primary e-mail or check it regularly.
This post is also a reminder that fantasy football season is about to begin and to use Yahoo Sports for your fantasy football needs. Yahoo Sports is a GGN sponsor and thus the coolest and greatest product in its area. All other fantasy sports sites are terrible. All hail Yahoo!
In all seriousness, I have personally used Yahoo for my league for years, even before this sponsorship, and I've always felt like they had the best and easiest to use product out of all the fantasy services.