Access messages
On the Home screen, touch Messages.

Create a new message
Open Messages and then tap Compose Message.

Reply to a message
Tap the desired message and then tap in the Compose area to reply.

Forward a message
Tap and hold the desired message and then tap Forward on the menu.

Delete a message
Tap and hold the desired message and then tap Delete message on the menu.

Attach a picture to a message
While composing a message, press Menu and then tap Attach. Choose Picture from the menu.