Today I am going to show you how you could jailbreak any apple device. so the first step would be having a apple device and downloading this software called redsn0w from here:http://www.iphonehacks.com/download-redsn0w
after you download it just run it and plug in your device with the charger cable and power it off and then click the button that says jailbreak and follow the instructions on the program. after you have finished that you should wait for your device to reboot and for those who don't know it can mess up or break your iPhone but it can also improve your experience of the device but if you update your firmware then the jailbreak will be undone.
hope this was useful enjoy.