To use these posters and prints, simply choose a spot on your wall, measure it out, and hang them up with nails or adhesive strips. Make sure the surface is clean and dry before hanging. As for maintenance, avoid exposing them to direct sunlight for long periods as it may fade the colors. You can gently dust them with a soft cloth every once in a while to keep them looking fresh. Don't use any harsh chemicals or abrasive materials on them.