Uh. Holy shit. Apparently reading certain books in your inventory (right click -> info) may confer minor stat bonuses to the main character. The below are the three I've found so far about halfway into chapter 1.
The game literally never tells you this.
Also, people are sharing what unique dialogue options and reactivity they get as followers of certain deities, since this game allows you to worship a deity or become an atheist without having to play a cleric or something. They put a lot more work into this than I expected.
Yeah, that was a kickstarter goal, so they they delivered. I also found several dialogues for specific races, gender and for some classes (not archetypes) so far. That is added to the unique dialogues of every mythic path. It´s been fun so far.
I end up changing Lann to a hunter (he has the underground hunter background) and picked the nastiest, smelliest cur I found as an animal companion, and I call it "Wendy" I think that´s something Lann would do =D