Glad you like the site. Just be sure to trade safely. Unfortunately like any market (Black or white) there are people out there with malicious intent. This is an unavoidable part of life it seems.
Use a middleman for trades you feel unsure about, even those you think may seem safe. It may save you some money in the long run. If you ever have any questions, I suggest taking the time to PM a moderator or a more seasoned member of the forums and request help. Most users and all of the mods are more than willing to answer questions when we can. Never trust a user solely on their vouch count or their post count. Take some time and look into the person you're trading with, and consider every aspect of the trade carefully.
I do hope you enjoy your stay and become a prominent market as well as a community member.