Im new to jailbreaking and i was wondering what program i should use? I have a 2g ipod touch 2.2.1 firmware. I also have windows XP, SP2. I want to know what i need to install, backup, etc. so my computer doesnt crash and i dont totally screw up my ipod. Do i need to re-add all my stuff on my ipod (music, videos, pictures, apps)? Where do i go to get the 2.2.1 firmware to back up? What exactly does cydia do? Thanks guys EDIT: Also, can i get it back to its original state if i decide i dont like it jailbroken?