The images show two sides of the same stamp. The red rubber being the working side, and the white with identical image on the top is to facilitate positioning. The white side is slightly tacky and temporarily sticks to an acrylic block (not included) but available at most crafts stores. Each stamp comes with a clear reuseable sheet to store your stamps.
This video gives you the gist of how to use them with the exception that you don't need the tack and peel tape. The white back of my stamps is permanently tacky. If it looses its tack after lots of use, Soap and water cleaning restores the tack.