lol welcome monica12 to the metro pcs gs3 fam!! i gotta admit for a first time metro gs3 owner your pretty brave. We usually recommend users to play with their device stock for a while so they get used to their phone and get a feel of how everything works. from there we recommend doing the essentials to ensure your device is always backed up and ready for any possible inconveniences they may go through. seems you decided to go all out with a crash course instead. Luckily for our kind members here they were pretty helpful in helping you to this point. Anyways for future reference don't hesitate checking out our all rooting guide, it will save you the trouble from finding out which steps to take next in making your phone do what you want it to do in the most safest way possible.
http://androidforums.com/metropcs-g...metropcs-galaxy-s3-all-things-root-guide.html
also take a look at our guide in backing up and recovering our important nv file.
http://androidforums.com/metropcs-g...very-important-backup-nv-before-flashing.html
and if you have any more questions don't hesitate in asking.