Thinking Forth
This is a wonderful book about the forth methodology, and how to be a great programmer.
Written by Leo Brodie. There is currently a project on SourceForge to create a PDF version.
Version 1.0 is now released, in both PDF and hardcopy.
Project, PDF at: http://thinking-forth.sourceforge.net
Purchase on-demand copies at: http://tinyurl.com/4lg6a