Holding the iCloth flat, wipe the screen surface from top to bottom in a straight downward motion. Repeat across the width; this will remove all the dirt, grease, and grime off your screen. Or, try the zigzag method, cleaning in a back-and-forth motion covering the entire display. As many e-readers have an inset screen, first clean around the edges and any build-up areas. Flip the wipe, and repeat as necessary.