can i participate in the sig campaign ?
No, Newbies can't participate in the campaign.
How does one transit from Newbie status to the next level?
There is a different thread for that. Newbie here as well, but all you need to do a google: "bitcointalk forum rank and activity"
btw you can still get eggs from putting a link to the newsletter sign up if you are newbie status. you just need to register with the Eggsbot and get a username then the tracking link is https://wings.ai/?ref=USERNAME
note: bot is down at the moment so we checking on it, will notify when it is back up