Well I have a BASIC world (and I do mean basic) created. Two of them actually. One is going to be a dungeon, and the other is my test area. Floor, walls, ceiling, a few pillars with arches, a ramp, and I’m working on some stairs. Got some light globes stuck around (1000 - 10000 radius works lovely) since I can’t get the ambient lighting to work exactly like I want to yet. I still have so much of the tutorial to read, but I’m having too much fun just creating stuff! 
I’ll have to read more because I’m getting stuck on all the neat things I want to do and that I don’t yet have the experience with the toolset to create. But for day two, I’m doing pretty damn good methinks.
Now if can just get my stairs to work right, and perhaps a ladder, I'll be thrilled.
