Using your Herschel Supply Co. Pop Quiz Backpack is easy. First, put your laptop in the padded sleeve pocket. You can keep your pens, notebooks, and other small items organized in the organizer. Store your sunglasses in the fleece - lined pocket to protect them. When it comes to maintenance, if it gets dirty, use a mild detergent and a soft cloth to gently clean the surface. Avoid using harsh chemicals as they may damage the fabric and zippers. Also, don't overstuff the backpack to prevent strain on the zippers and seams. Keep it in a dry place when not in use to maintain its quality.