Using these balloons is a breeze. You can fill them with either helium to make them float or air for a more traditional look. For helium, use a helium tank with a proper nozzle. For air, you can use a balloon pump or just blow them up by mouth. When decorating, you can tie them together in clusters and hang them from the ceiling or place them around the venue. As for maintenance, keep them away from sharp objects to prevent popping. If you're not using them right away, store them in a cool, dry place. Avoid leaving them in direct sunlight for long periods as it can cause the color to fade and the latex to weaken.