So i have a 2nd generation touch and had some questions....my friend is selling me his 2nd g and he already has songs on it, how do i back up the songs on his ipod before i sync it and erase all his music which i wanna keep?next is,after u jailbreak it can u still go on apple apps store and download free games,without going on cydia?can anyone also explain how cydia works i read about source and all the other stuff which i dont know, anyone have a link to a wesite thatll go in detail about cydia?and a website thatll teach me everything i can do with a jailbroken 2g?