how to jailbreak iphone
To jailbreak your iPhone, you need to connect it to the internet. Once that is done, there are different programs that you will need to download to jailbreak the phone. Go here for further details: http://www.iphone4jailbreak.org/.
Jailbreaking an iphone easy to do if you have a jailbreaking software. You run the software along with the Cydia installer and it will jailbreak the phone.