Welcome fellow Texan,
You need to upload the pic to a website not just this one, but you can do that by clicking your bolded username in the right hand corner. Then go down to were you see albums on the right hand side. Click "Add Albums" then once that screen loads you can click upload pics. Find all the pics that you want to upload. Once you do that, Open the album with the photos in it and then open each photo you want to post. Copy its link. Go to your "Thread" and click "post reply". On the new page that opens, in the "Message" box there is a yellow button with a landscape icon. Click that and paste the link you copied and that is all you have to do.