Step by step instructions
1. First, you'll need to be friends with the person you'd like to send a private message to (to read more, see 'How do I send a friend request?')
2. Select the speech bubble icon in the top right hand corner
3. Select 'New Message'
4. Select the user you would like to send a message to, you can do this by starting to type in their username
5. Type your message and when you've finished, select 'Send'
6. You can view your conversation thread at any time