Just started playing this. I've never played CK2 regular campaign, so I'm learning everything through this.
Any tips, ideas, techniques, strategies, etc...? If I start with just one holding, but I am a High Lord or w/e, how do I take over my vassals lands? If not that, how do I take over the land of a neighboring faction that has the same King as me? Just fabricate a claim? Any other tips?