i just got my new phone yesterday and i got pretty used to the system and all that,, but now that i downloaded all the apps that i wanted,, i see that there are quite a few apps which were already installed that uses data.. i was quite shocked that the onavo's live data shows how much some of these apps were hogging up the datas,, like i know i downloaded apps from google play but i do not even see where the market downloader is and it is saying it used up 50mb in a day and a half.. I am also using apn app that turns on and off all the data connection with a touch of a button...
so .. my question is..

1. How do i root the phone and what are some cautions i need to take (my main purpose is to get rid of pre installed apps that i do not wish to have)
3. i'm reading some stuff about rooting and it says i need a certain program to run it and to have back up of.. which programs are those?
2. how do i know which apps/ preinstalled programs are safe to delete once rooted? (ex. i delete something then it tells me a phone's basic functions do not work... )

i will be continuing to look for what rooting is/ how it works and what are safe to delete on rooted,, but i would also like to hear from the experienced guys like you.. please help me out guys, thanks you so much~