If you know me in real life and you hate my guts, chances are I feel just the same about you.
Madness string 2335
When you think about it, the fundamental bedrock, literally, of worldbuilding is geology. If you know a bit about how landforms are made, how erosion occurs, how landscapes change over time, that will take you a long way to developing and establishing a world that is at least realistic enough to be convincing.