Hi @chronocrypto I am glad you like tha game so far.
Don't know if you have figured out how to place an item on the market.
If not:
Hover over the item you want to offer to the market then click on the name of the item and you will be forwarded to the items detail page where there is a button on the right that says "offer to market" click it an type in the box the amount of USD you are asking (mind the transaction fees though) and then click the offer button.
There is also a short video on how to do it. Click on "Market" in the menu on the left, then you'll see three buttons on the top. One says "Howy to?" just click on it and you'll see the video.