No your itouch can't break if you use the right program correctly. On the off chance something does screw up, you can always restore.
No, your ipod will not break. You simply charge it and re-do the jailbreak. no and you don't need to re- jailbreak it
How to jailbreak my iPod touch
no, to get a newer jailbreak you have to restore the ipod touch and then update the ipod touch and then download the jailbreak. that is a huge con for jailbreaking.
You can turn off the iPod Touch if you jailbreak it.
No currently there is no jailbreak available for the ipod touch 2nd gen
You cannot put themes on an iPod Touch without the jailbreak.
There is no 3gb on the ipod touch.
to jailbreak your ipod 4.1 go to greenpois0n.com
to jailbreak your iPod 4.1 go to greenpois0n.com
Yes, you can "Undo" a Jailbreak, by going into iTunes and Restoring your iPod Touch, or iPhone.
You can re-jailbreak your iPod Touch if there is a jailbreak software for your newly updated iOS. Chances are if you updated to the most recent firmware, you will have to wait awhile before a jailbreak comes out for it
Yes, you can. Go to jailbreakme.com on your ipod touch and you can directly jailbreak your iPod Touch from your iPod.WARNING: Make sure your ios version of your iPod Touch is 4.2.1 or lower or it will not work.