If you do not have your photo file ,that you want to post to dp ,(ending with .jpeg , .gif or others that this web site accepts) in your PC ;
-first you should transform it into your computer , to do that you can use scanner you have . Put your picture and do start , (if you have already installed scanner into PC)
-having scanned your, PC recognises your photo . save it somewhere .
(for scanning ,read the tutorials step by step)
now you got photo file. send it to dp via e-mail
place it to (your)website that it will be given an image url . Copy the link and push the image button-paste the link-then push again image.