Using this Incase hardshell case for your 15" MacBook Pro Retina is easy. Just gently snap it onto your laptop. Make sure all the ports and buttons align properly so you can use your laptop without any issues. When cleaning, use a soft, dry cloth to wipe the case. Avoid using harsh chemicals as they might damage the case's finish. Keep the case away from sharp objects to prevent scratches. If you notice any dust or debris inside the case, you can use a can of compressed air to blow it out. Also, periodically check the rubberized feet to ensure they're still firmly attached, as they help keep your laptop cool and in place.