I'm in the same situation as you. Needs more posting to be qualified.
But based on my experience: first, you can reply and posting on "Introductions, Help and Recommendations" board. Second, PM is allowed so you can ask questions, make offers personally. I actually did my first purchase on the next day I registered. Though some members may avoid to do business with a newbie.
Relax noobs. The site must take precautions before allowing you out into the big world of Head-fi. It can be dangerous out there, before you know it you may find yourself in the sound science section or similar. being eatin alive. We're preparing you.