The lack of a manual and secret feeling things you can do on Snapchat are part of the appeal. Most people learn how to do them from others and snapchat is often

The lack of a manual and secret feeling things you can do on Snapchat are part of the appeal. Most people learn how to do them from others and snapchat is often used while you are with some friends in contrast to FB or Twitter which are more used solo. You learn fun things by asking each other or seeing people do them. It's counter intuitive but the squirreliness of the interface is one of it's selling points