Yup.
no u can get it off itunes appstore
Yes I recently jailbroke my iPod 2nd gen and all the apps I got off iTunes or the AppStore didn't get deleted
No
on itunes it does
The App Store is already included on the iPod Touch.
It depends on what you're adding it from.
No it is a second appstore but different
No, downloading iTunes on your iPod is completely free. However, the songs, videos, and other things that you download from iTunes are not free.
Try installous or cydia, not on appstore
Yes. You have to set up a payment option on Itunes(credit card)
yes! there is an app that is on your touch called itunes.