Advanced

How to use 'bind and when ...
Enlightenment on the troublesome concept of 'bind.
http://www.pat665.free.fr/doc/bind.html

Ladislav Mecir's REBOL Articles
Several excellent technical articles about functions, context and binding, and the REBOL interpreter. Also dialects and scripts.
http://www.fm.tul.cz/~ladislav/rebol/

Programming Languages and Computation Theory
REBOL features in this course at Clarion University - includes a lex scanner and yacc parsers of the language.
http://jupiter.clarion.edu/~rsmaby/cis460/

REBOL and RMAIL in Emacs
By Sterling Newton. If you spend half your life in Emacs and deal with RMAIL then maybe this article can make your life a little better.
http://npt.cc.rsu.ru/user/wanderer/ODP/REBOL_RMAIL/REBOL%20and%20RMAIL%20in%20Emacs.htm

Build Simple Asynchronous Pluggable Protocols for Windows
How to use the REBOL scripting language to create a protocol that works similarly to the javascript:// protocol, compiling and evaluating arbitrary REBOL statements and displaying the results. <small>(August 26, 2003)</small>
http://www.devx.com/webdev/Article/17120

Tail recursion in REBOL
Proper tail recursion is unusually difficult to achieve in REBOL. Joe Marshall describes the problem and solution. From LL1: Lightweight Languages Workshop. <small>(November 17, 2001)</small>
http://ll1.ai.mit.edu/marshall.html