I go for Midas Touched (stewardship) for the big demesne. My last king had a demesne size of 15 and his daughter is at 13. I always get 12+ which means basically three big duchies. My old capital duchy, my new capital duchy, and a few more. I am starting to wonder if maybe I should be going for diplomacy instead.
Now that my land is almost as strong as one of the two empires my personal levies don't do much, and most of my wars are against vassals. Right now I prioritize diplomacy second, perhaps I should put it first? I can't see the point of a military education, and I am not sure what learning does. Intrigue seems unimportant since every plot against me has been caught in time for me to stop it.
Also where can I see my ruler's fertility?