Using this backpack is easy. First, open the main compartment and start placing your loose sleeved cards inside. You can arrange them in any way you like. For your MTG playmats, use the exterior pockets and secure them with the playmat straps. When carrying the backpack, make sure to adjust the straps for a comfortable fit. As for maintenance, keep it clean by wiping it with a damp cloth when it gets dirty. Avoid over - stuffing the backpack to prevent damage to the zippers and seams. And don't leave it in direct sunlight for too long to preserve the color.