A first version of the book Programming Ruby is now available, both
online and for download.
The online HTML can be viewed at
http://www.rubycentral.com/book/index.html
The book may also be downloaded (as XML and HTML) from
http://www.pragmaticprogrammer.com/ruby/downloads/book.html
The book is released under an Open Publication license, so you're free
to make copies--see the file COPYING in the download for details.
There are some known minor formatting problems that are artifacts of
the conversion from LaTeX. We'll try to address these as time
permits. In the meantime, enjoy!
Regards
Dave