When you have saved your images to your PC, edit them by cropping away all background, leaving the coin and save the changes. Then when you have made a post click on the button at the bottom of your post, Upload a File. This takes you to your PC files where you choose the image you want to display, highlight it and click save and it will load to your post. You have two options, Thumbnail or Full Size, click Full Size always as it gives others the chance to see clearly what you are describing and to also enlarge it. If this is a bit much to take in you can can drag and drop your edited image to your page but remember to click Full Size when it is on your post. That is it, you are good to go.click on Post Reply. Good luck