Another way to add friends on Snapchat is by syncing your phone book. This is like throwing a party and inviting all your friends at once - just make sure you haven't blocked anyone by mistake, or it could get awkward.
Once you've synced your phone book, Snapchat will show you a list of friends who are already on the app. You can then choose who to add and start snapping away like a pro. Just don't forget to keep it classy, or you might end up on the Snapchat Hall of Shame.