These instructions are helpful; I had absolutely no idea I had to move the map with WASD. However, there still seem to be several features that aren't working or I don't know how to use them--namely, StellarCulture and StellarScience aren't building anything and I don't see any option to select what they should build, and I also don't know what researching new tech or culture would accomplish.
I also found this bug where it won't let me exterminate the planet even though I have enough soldiers.