To use this Pokémon TCG portfolio, simply open it up and start inserting your cards into the pockets. You can load them single or double, depending on how many cards you want to store. It's a great way to keep your cards organized and protected. When handling the portfolio, be gentle to avoid any damage to the pages. Keep it in a cool, dry place to prevent any warping or discoloration of the materials. Since it's made of archival - safe materials, it'll protect your cards for a long time, but still take care not to expose it to excessive moisture or direct sunlight. Remember, the cards themselves are not included, so you'll need to supply your own Pokémon TCG cards.