Using this backpack is a breeze. First, open the main compartment and neatly place your loose sleeved trading cards inside. You can arrange them by type or set for easy access. For your MTG playmats, use the exterior pockets and secure them with the playmat straps. When you're ready for a game, just grab the backpack and go. As for maintenance, keep it in a dry place to prevent damage. If it gets dirty, you can use a soft, damp cloth to gently wipe it clean. Avoid overloading the backpack to prevent any tearing or breakage of the straps.