I am a beginner to Unreal scripting, and had not realized how involved it could be. This book helps you with setting up everything you need to get started, installing the UDK and external programs for script editing/compiling, and setting up a project.
The book appears to be aimed more so at beginners, with information about basic programming types, functions and states, albeit how to use them in UnrealScript. It does include some more advanced concepts, such as working with multiplayer, but it’s primary purpose is to give a good base for learning how to use UnrealScript.
Overall, it contains a ton of information on using UnrealScript, and would be useful for any looking to become very familiar with it.
You can pick up the book here:
http://www.packtpub.com/unreal-development-kit-game-programming-with-unrealscript-beginners-guide/book
Unreal Development Kit Game Programming with UnrealScript: Beginner's Guide Review
Great amount of information for working with Unreal scripting!