Welcome to MM!
First and most important tip - please click the my stuff link up in the menu bar; that will take you to your my stuff page, then you will see near the upper right a button that says Avoid Scams, please click that and go through it.
Every newbie seems to get hit with scam emails, messages etc right away. (or so it seems based on the posts - Is This A Scam?)
Post in the forums, but read the stickies up top of each forum first for rules etc., that will get people looking at your profile.
Have fun and enjoy the Mayhem.