More info: http://stateofjailbreak.com/jailbreaking-faq/
In this video I go over several frequently asked questions about jailbreaking. This video is meant for a first time or novice jailbreaker who is interested in knowing the basics of what it means to jailbreak your Apple device be it an iPhone, iPod touch, iPad or Apple TV.
Some of the topics I cover include what exactly is jailbreaking, what Cydia is, whether or not you can harm your device by jailbreaking it, what SHSH blobs are and how to use them, the difference between a tethered and untethered jailbreak and what happens when you update your device when jailbroken.