Only if the app you're trying to download is larger then 50 MB.
Yes it does
if you have wifi you can just download them off your ipod touch . if you dont have an ipod youch you will have to go onto itunes and go to apps and get free apps or paid ones .
There is an App Store app on the iPod Touch that is used to download apps.
Yes you can download apps to them from itunes on your computer (then transfer them) or straight to the ipod touch using a wifi connection.
Yes, it doesn't matter what iTunes software you have, you can still download apps from it to download to the iPod Touch.
with the proper apps, yes
No it costs nothing for FREE apps on your ipod touch.
yes
Yes
You can't get apps wirelessly without wifi but you can plug your device into computer.
mmm you cant download wifi but you can use wifi
Yes
yes it can.. it only has the apps that came with the ipod but you cannot download apps like you can with the ipod touch.