Have a look at FAQ on
Buying & selling
Q. How do I write a great post?
Q. How should I communicate with other users?
Q. How do I make an offer?
Q. How do I buy something?
Q. How can I get more people to see my post?
Q. How do I set Keyword Alerts?
Q. How do I add photos?
Q. Added Keyword Alerts but haven't received any notifications?
Q. How do I edit a listing?
Q. Trading and Refund Policy
Q. How many posts/listings can I make?
Q. Why can't I upload photos?
Q. How should I pay?
Q. How do I post, sell or make an ad?
Q. What should I do if I've been scammed?