In my opinion, if you are new to the forums trading/selling is going to difficult.
I don't trade very often because I prefer value knives, and they are not very common in the Trade Forum.
If I am interested in a trade, I check to see if the person has a good (perfect) history, and has been in the forum for at least 3 years. Most BFers won't risk their rep over one value knife transaction.
Because I have very little history I will typically offer to send mine first, and allow the other party to inspect my knife.
It is a longer process, but it has worked for me so far.
If both parties are not immediately satisfied, than the knives can be immediately returned. No harm, no foul.