Instagram is an online photo and video sharing platform that was created by Facebook. It is used to share photos and videos with friends and family. The app has been downloaded more than two billion times. The app is available on both Android and iOS devices. To use it, you need to create an account and enter your name, email address, and password. After you have created an account, you can start sharing photos and videos. To share a photo or video on Instagram, first open the app and select the photo or video you want to share from the gallery. Then tap the share button at the bottom of the screen. When you share a photo or video on Instagram, your friends will see it in their notifications area. They can also view it on their own devices by clicking on the link in their notifications area.