Using these sleeves is super easy. Just slide your cards into them one by one. When you're done playing, you can stack the sleeved cards neatly. As for maintenance, keep them away from sharp objects to avoid scratches. If they get dirty, you can gently wipe them with a soft, dry cloth. Remember, don't bend or fold the sleeves too harshly as it might damage the texture and clarity. With proper care, these sleeves will keep your cards looking great and protected for a long time.