I am super confused

I'm trying to post 2 accounts that i am trying to sell but the thread won't let me add pictures...
i click the paper clip and a window comes up that looks like i will be able to attach something but it won't let me click anything and it says "you have uploaded the maximum of 1 files". so i make the page half screen so i can see what's on my desktop and i try to drag the pictures over to the thread and it still doesn't let me. it takes the page to the picture and makes me go back a page and poof the picture is gone.
need assistance please.

 

You need to upload your image to an image host like http://imgur.com

You then take the "DIRECT LINK" it gives you and post that on your thread.

Example:

Code:

[img]YOURDIRECTLINKHERE[/img]