A new Unreal Development Kit tutorial has been posted on design3. Check out "UDK Basic Techniques" here:
This training module will teach you the basic techniques for working in Epic Games Unreal Development Kit. You’ll learn how to work with basic geometry, build detailed terrains, create water volumes, and add lights to your maps. You’ll also learn about the different actor classes such as weapons, pickups, and vehicles. This is the third module in the UDK Fundamentals series.