A place for CK2 knowledge?

Is there a place that has the "hidden information" about CK2? All the "wikis" I've seen are the most BASIC shit, and haven't been updated for patches OR DLC. I wanted a site that has the hidden info - like how the "wanting a son" ambition increases your fertility. (Which isn't said in-game, which is probably why it isnt in any wiki)

Is there a site that has this hidden info? And if not, could this sub-reddit make it's own, updated wiki for the game that has the basic info, hidden info, tips/tricks, and guides?