Cydia, Then install the source.(Might not be spelled correctly) and install Install0us. Then you can get any paid app for free.
A jail broken iPod can get you free apps and free in-app purchases, but it voids your ipods warranty because you are editing the software that apple designed
you cant u need a PC
Not if your careful with the jailbreak apps that you download. Some of the apps from Cydia can harm your iPod touch and possibly block your iTunes account.
Impossible
To get all free apps, go to the App Store and purchase every free app you can using your iTunes account. You must pay for the apps that cost money.
jail break it, play apps, sell it
if you want your iPod touch jail broken you could go to a computer store and ask them to get it jail broken
You can basically get free apps and get cool springboards.
Yes.
By using Installouos from jail breaking your device
You can't :D The closest to that is jail breaking !(:
Yes, the iPod Touch with the 2.0 software can be jailbroken.