Any good companion app

[Kaneko]

Hi, I was wondering if there's any companion app or the like that is worth to use while playing PF:KM to actually learn to play.

Thing is, never played pnp rpg (irl) and while I played many hours of Neverwinter many (many) years ago and a little less of Baldur's Gate, I must admit that the learning process was huge.

I feel like this is the first time a game is the next thing of cRPG, PoE is a poor attempt on capitalizing on nostalgia and DOS is awesome but more user friendly as it simplyfies many of the internal mechanisms.

I'm not trying to make the learning easy, because it's not but maybe there's something learn and see why some builds work and other not so much.

So any feedback is appreciated.