THE BASICS OF SENDING A MESSAGE
To compose a new message, open the Messages app and tap the pencil-and-paper icon at the top right corner of your screen. Use the keypad or the encircled “+” icon to add one or more recipients to the field at the top, then use the keypad to type your message before hitting Send. A preview of each conversation thread is shown on the Messages app main page. To pick up a conversation where you left off, just tap the message thread and continue texting.