If its iOS 4 to iOS 4.3.5 then go to JailbreakMe.com If it has iOS 5 to iOS 5.0.1 use Redsn0w (provided down below in related links)
Yes. On your iPod 4g, go on Safari and search for Jailbreak sites.
you use green poision
Redsn0w jailbreak 6.1.3 for the iPod 4G is already available. It was released in March 2013. However, if you use Ultrasn0w to unlock your iPod do not update 6.1.3.
The only way you could lock a iPod 4g or eny kind of iPod. Is to jailbreak it in redsn0w or in greenpois0n
Yes. It will cost less if you jailbreak it. Never do THAT on e-bay.
restore and re jailbreak
Yes.
i dont know but u buy them ^^^ No you don't just go to jailbreakme.com Jailbreaking is a free service. If you have every had to pay for a jailbreak, you have been scammed.
Cant, Just jailbreak. Nothing will be different but cydia will be installed.
Find out yourself... It's how you learn
YOU DOWNLOAD Evasi0n for ios 6
not yet but there will be soon 5/10/10