If you want to crop (or cut) objects from image, look for images with white/black or any clear backround. For example, a woman which clearly shows in it and with white backround. Then use the Colour Select -function (Select -> Colour Range) and choose the clear backround, hit OK and Ctrl+X or Delete or something else to remove it. Or you can use the Quick Selection tool, which works pritty much the same way but you can work more in details with it.