Not at all! Even if you end up jacking up your phone you can always restore from iTunes!
By jailbreaking it.
Jailbreaking will void your iPhone's warranty.
You cant without jailbreaking it.
Jailbreaking is free.
Jailbreaking a phone is partially legal and partially illegal. I have a post regarding this http://www.techlucid.com/2013/11/is-jailbreaking-illegal-or-not/
Yes and it works pretty well for me
yes it is absolutely legal
It is okay to jailbreak your iPhone 3g. The only downside to jailbreaking your iPhone is that you will loose your Apple warranty.
Yes by jailbreaking your apple device
No. Sorry.
It is not illegal but will invalidate any warranty.
Jailbreak iPhone - What Does It Mean? cellphones.about.com/od/glossary/f/jailbreak_faq.htmQuestion: What Does It Mean to Jailbreak an iPhone? ... you can do even more than that: Jailbreaking even lets you to unlock your phone so you can use it with ... iOS jailbreaking - Wikipedia, the free encyclopedia en.wikipedia.org/wiki/IOS_jailbreakingSuch devices include the iPhone, iPod touch, iPad, and 2nd Gen Apple TV. .... the first iPhone unlock, released a jailbreaking tool for the iPhone 3GS on iOS ....