Last weekend I went through the Getting Started chapter of the tutorial videos that come with the Unreal Tournament 3 collectors edition. The videos are pretty well made. First, you build two rooms connected by a small hallway. Then you start populating the level with some interious detai such as cross beams, statues and lamps. After that, the basics of lighting are tought. That kind of wraps up subchapters 1-5. Subchapters 6-10 go review topics that have been touched while the introductory level was build, and go into some more detail about brushes, building, actors, widgets and snapping.

Below is a screenshot of the level that you build: