Check out "UDK Basic Level Design" on design3. Learn to create & play your first Unreal map.
This training module will teach you the basics of level design in Epic Games Unreal Development Kit. You’ll learn how to create basic map geometry, add lights and particle effects, and how to play test your levels. Your maps will begin to look more professional and complete as you add decorations, details, lighting effects, and foliage. This is the second module in the UDK Fundamentals series.