Enter the name of the topic in the search engine and get a link to the resource on the Github from Lothrik. its awesome 
Today I saw this on stream at Ginger: A Diablo IV Build Calculator Already!? - YouTube
p.s.: I am already planning a barbarian 
Well as GGM says, all the info floating around the web, realy makes it easy to make a very basik skill calculator. Though thinking it will not change at all, untill lunch is not a smart thing. That said it’s interesting that the necro and druid havent been officialy shown through the streamers, it does have the treees spot on from the clodes beta. And that info should still be under NDA.
i was gonna say trojan, but it GGM so it’s prob okay, but still, i wouldnt touch it until i could thoroughly check it.
Good attempt
but no