Welcome to the Card Trading forum!
What you have to do is create a topic with a link to your cards in the "Cards Owned" forum.
You may browse other people's lists and if you find cards on their list that you like, you may ask to trade.
-It would be advisable to also present your list in your post at this time. This way, the other person can find a card they want for the card you want.-
--Please Note: Cards MUST be taken off or put on the list if they are traded.--