I just read through the entire front page and I have no idea: 1) what need wikidata will fill 2) what they want me to do 3) how I would go about doing (2) (o

I just read through the entire front page and I have no idea: 1) what need wikidata will fill 2) what they want me to do 3) how I would go about doing (2) (other than "starting the wikidata community", mentioned at the bottom of the page, which sounds like a lot of work). Maybe I'm not their target audience, but this sure as hell isn't a good elevator pitch.