I'm just now deciding to dive into Unreal Developer Kit, I think it will be the best approach for the FPS Sci-Fi/Fantasy game I am envisioning. I'm thinking of starting off working with the Videos/Tutorials found here on Desura and then after a while I'll look into getting the full Unreal Books, especially for UnrealScript.
Thats all for now, small update I know, but school is keeping me quite busy. So unless I want to start pushing past 60hour work weeks I'll have to take it slow into UDK.
I'll be sure to start making my efforts more known by the end of 2010, until then I have to come up with something worth showing first!
~Cheers!