I have never jailbroken any of my iDevices. I have decided to jailbreak my iPhone 4S on 6.1 when the jailbreak is out. I have a few questions: 1) How do I pay for payed tweaks? 2) If I buy a payed tweak, can I get it on my other iDevices for free? 3) Will jailbreaking my device delete all data? 4) What are some must have tweaks for jailbreaking?