ok i will explain it.
There are several thing that you must keep in your mind before putting or adding pictures in resources.
The pictures must not contains any copyright issue.
I means it must be your own clicked picture either by camera or mobile phne camera.
So whenever you need to add a picture there is an option called updoal your picture, you have to click that button , after that you have got a dialog box.
After that you can go to the current location of your picture in to your computers hard drive through that box browse button.
After locating the picture click the ok button.
So after that your picture should be appeared on resource.