Actually, Forth (the predecessor of concatenate languages) has the best tutorials I've ever read - Starting Forth and Thinking Forth by Leo Brodie. http://www.

Actually, Forth (the predecessor of concatenate languages) has the best tutorials I've ever read - Starting Forth and Thinking Forth by Leo Brodie. http://www.forth.com/starting-forth/ http://www.forth.com/starting-forth/ http://thinking-forth.sourceforge.net http://thinking-forth.sourceforge.net