Using these balloons is a breeze. First, you can choose to inflate them with either air or helium. If you want them to float, use helium. Once inflated, they'll float for around 12 - 18 hours. For hanging them up, you can use strings or other hanging materials. When it comes to storage, keep them in a cool, dry place to maintain their quality. Remember, this listing only includes the balloons, so you'll need to get other decorations separately. Also, since they're biodegradable, you're doing your part for the environment when you use them. Enjoy decorating your special events with these beautiful balloons!