it should be predownloaded and you need to type in apple id pretty simple
Imessage can have go over wifi for iPod touch
iMessage is on iOS 5 and the iPod touch first and second generations can't support it.
For iMessage on iPod touch you don't get a number people will contact you using the email you used when you signed up.
Yep
You can only iMessage with someone else who has an iPhone, iTouch, or iPad.
Yes
Yes, if they are both running iOS 5 or higher, and iMessage is enabled
Yes. iMessage
No, you can use iMessage on a 3rd and 4th gen iPod Touch running iOS 5.
On an ipod touch you can or an iphone but nothing else... YET! :)
iMessage for ios5 or text me which you can buy in the app store
well i have me an ipod touch and i think u cant cause when i be trying it several time it wouldn't work for me