Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Update: Round 1 will be posted sometime on Wednesday, with everyone who has signed up before this post eligible to be paired. Signups will continue until the deadline in the OP, but anyone signing up after this post will not be able to get in until at least round 2.