Using this Pibow touchscreen frame is a breeze. First, take out the frame and the bolt pack. Then, attach the three - layer part to the back of your 7 - inch Raspberry Pi touchscreen using the bolts from the pack. No tools are needed, so just do it by hand. After that, adjust the two legs to set the screen at your ideal viewing angle. You can enjoy using your touchscreen with full functionality as it's not blocked and all ports are accessible. When it comes to maintenance, just use a soft, dry cloth to wipe the frame clean. Avoid using any harsh chemicals. Remember, the screen and Raspberry Pi are not part of this product, so handle them separately. Also, keep the frame in a dry and cool place when not in use.