
UDK Users Group
"UnrealScript API Essentials" has recently been released on design3.
http://www.design3.com/udk/intermediate/unrealscript-api-essentials
This intermediate programming tutorial will teach you more advanced scripting practices within Unrealscript. We'll first learn a few useful skills when using Unrealscript, then develop a deeper understanding of the API and the implementation of these theories. Finally, we'll explore more detailed procedures like Controller/Pawn relationships and User Input.