Using this Double Deck Holder 200+ XL is a breeze. First, if you want, you can take out the inner deck holders. Then, start placing your double - sleeved cards into the holders, with each holder able to handle up to 100 cards. When you're done filling them, put the holders back in the main unit. To get to your cards, just use the Cobra Neck technology to open the lid wide. As for maintenance, keep it in a dry place away from direct sunlight. If it gets dirty, you can use a soft, dry cloth to wipe it clean. Don't use any harsh chemicals as they might damage the holder. And when not in use, store it in a safe spot so it doesn't get knocked around.