this is my first time jailbreaking. and used the new JailbreakMe.com 3.0 which worked amazingly great. i was surprised how easy it was. so my question is being a first time doing a jailbreak, what are some cool things to add via cydia? like change the network name(AT&T), and what other things can i do? and also how do you exactly use cydia? oh also. is there a need to change passwords on some stuff? b/c of the hacking issue before. and also why isn't the MobileTerminal working? it installs then after i tap on it it open and crash's.