Can you make a iPod touch into a phone (how)
How to Turn Your iPod touch into an iPhone: 4G Edition http://m.lifehacker.com//5636976/how-to-turn-your-ipod-touch-into-an-iphone-4g-edition
There's apps but u also need something with a microphone to talk
Why do you think theres an iPhone...and an iPod....?
Yes, get the app Textfree
No can do. Unless you have another phone. And you start calling it your iPod touch.
If there's a camera on the front and/or back, you may be able to download Skype and communicate that way. Dunno if you can do FaceTime with it though.