Use your Inbox like a regular inbox – emailing system. However, on Facebook, you can only send messages to and receive messages from your Facebook friends. You can either go to your “Message Inbox” for reading new and old messages, or go to “Sent Messages” folder to read the messages you sent to others, or you can compose a new message by selecting “Compose Message”. In Notifications, you can check your notifications. You will need to subscribe to Notifications – the link is available in the Notifications screen.