I search for solutions in this order: Past Code, Unreal Source, Wiki, BUF, groups.yahoo, google, screaming at monitor. – RegularX

From Unreal Wiki, The Unreal Engine Documentation Site

Link needed...

http://www.unrealty.net/~andrew/

Some quick links:

http://www.planetunreal.com/fordy/terra.htm

Terraedit tutorial:

http://www.planetunreal.com/jaspos/terraedit/terraedittut.shtm