Default [Q] T999N Rooting

Okayy ive searched around and looked through ALL the threads and guides on rooting this phone and even followed some but im still stuck. Yes ive read and searched before asking so now im asking, is there any thorough guide or youtube vid maybe that shows how to properly apply full root to the T999N version of the galaxy s3 on metropcs? Im updated to 4.3 btw. Please no sarcasm/smart remarks
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