Jail breaking an iPod touch doesn't have anything to do with getting free Internet. If you want access to the Internet, you have to connect through a wifi signal (which is free, if you can access a network). Free networks can most commonly be accessed at McDonald's and your local public library. Otherwise, there's no way you can get it.
it is impossible I pods can only get internet through wifi and even though iPhones with a data plan can get internet through their days carrier via cell towers jail braking would not do anything and I pods can't connect to the internet through cellular data