No
Apple will if you still have warranty.
you have to buy a digitizer of amazon or ebay
No the touch screen movement will be disfigured near the crack. You can send it to apple but it will cost you.
you take it to the apple store
Your mom's house!
if your ipod touch has lost it touch, that probably means the screen is broken. if it has cracks, there is another sign. my friends lost her touch and had to order a new screen from apple, or go to the store were you bought it.
There is not a way to adjust the sensitivity on the screen of your IPod Touch. If you think it may be broken you can send it back to Apple to have them fix it though.
REBOOT, but DON'T just Respring
destroy it and chuck it into the bin because it is no use.
get a new phone.
Restore the iPod to the last restore point. You can do this in iTunes.