Elise Moreau in an article published by Lifewire Magazine October 19 2016 explains Snapchat very clearly and succinctly.
She writes: “All snaps automatically ‘self-destruct’ just seconds after they are viewed by the recipient, making it the perfect app for quick instant messaging by photo or video. As long as your mobile device can access the Internet, you can send and receive snaps from anywhere”.
“To get started with using Snapchat, you need to download the app for iOS or Android to your mobile device. Once you’ve downloaded the Snapchat app, you can open it up and tap the ‘Sign Up’ button to create a new user account. You’ll be asked for your email address, a password and your birth date. You can then choose a username, which acts as your unique identity of the Snapchat platform.