Connect to iTunes and install the update. Once you've done that, you will automatically get the iMessage app.;
,, This will enable others to use your email address to message you.
 You can add their name, the company they work for, their email address and a lot more.
,, It can be as long as you like. After you're done typing, hit send.


To send a picture or video, tap on the Camera icon on the left of the text field. You can choose to take a picture with the camera or pick one from your photo album. Sending multimedia generally take longer to send than text messages.
Your message will be in a blue speech balloon on the right side of the screen, while the recipient's message will be in a grey balloon on the left side of the screen.
Make sure your iPod has been updated to iOS 5 or later.
Connect to the internet wirelessly.

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Set up iMessage with your existing Apple ID.
Go to Contacts (located at the bottom of the screen) and add your friend's number or email address.
Tap the "Messages" app at the bottom of your iPod to open it.

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Type in somebody's name (or number) and tap the number/email address you want to message.

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Tap the text field and start typing your message.
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