You need to be able to download the photo off your phone or camera to the computer.
Once you have it on the computer, use paint to resize the photo to hosting size to upload to this forum.
If you don't want to do that you can use a free host service like photobucket which will resize for you while up loading.
Once you have the photo hosted, copy the
http://www link and put
after it and it should display on your post.