Documentaries, more than scripted movies, have to be about a topic you're interested in and/or people you're interested in. As much as I love documentaries, if there was a documentary about cabinet making or Kim Kardashian, I'm not wasting my time (though I'd choose cabinet making over KK anyday). So, you'd have to have at least a passing interest in Tupac to watch "Tupac: Resurrection." As for me, I was in high school and fully immersed in hip-hop when Tupac was at his zenith, so I have more than a passing interest in Tupac.
"Resurrection" pulls the curtain back. More than simply going into place of origin, important people, and important events, it goes deeper into who Tupac was in his own words. And as much as he was a controversial figure with some unflattering tendencies, he was fairly conscious. Some of that consciousness showed in songs such as "Brenda's Got a Baby," "Dear Mama," and "Keep Your Head Up." And at the same time his baser side is displayed in too many of his other songs which only means he was a flawed human being like we all are.
Unless you're a super Pac fan or a Tupac historian, "Resurrection" will give you some new information about Tupac you never knew, it will clarify things you were misinformed about, and the rest will be a refresher and a means to hear Tupac once more.