Just use your apple accounts for app store.
assuming you already logged your apple id into your device, simply go to setting-messages and turn on the imessages.
Yes. IMessage is not the same as the text messaging you have in something like a Samsung phone. iMessage only works with other Apple devices that have iMessage.
iMessage is using your email address because you probably signed up with them or one of your friends gave them your email address.
For iMessage on iPod touch you don't get a number people will contact you using the email you used when you signed up.
If you have iMessage installed you can only iMessage other iDevices that has iMessage installed on them. If someone has an iPad 2 but not with 3G but has an iPhone, then the iMessage will go there iPhone.
No. iMessage is only available for Apple devices.
You can not easily delete things from a computer, most computers just remove the info from your immediate sight. some responsible parents will set up their children's systems in such a way that all deleted items are saved to a special file for the purpose of checking up on the kids. (spying ) which has become a necessity in our modern age.
If your iMessage is not working, turn your device all the way off. Turn it back on. Go to settings and then general and then time. Set time to automated time. Again, turn your device all the way off. Turn it back on. Open iMessage, and it should work. If not contact the Apple Store, or look further online.
IMessage is some thing were u can chat to people who have iPhone iPod or iPad! :)
No, you cannot change the color of chat bubbles in iMessage. The color of chat bubbles in iMessage is determined by the system and cannot be customized by users.
If you have or can install the iMessage software on it you can but if not you can't. You can only iMessage other iDevices.