English-language Tofu information?

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I'm starting to use Tofu with WEBrick, and I'm looking for documentation
and discussion in English.  I know about this page, which is very
helpful:

  http://pub.cozmixng.org/~the-rwiki/rw-cgi.rb?cmd=view;name=YourFirstDiv

However, it's only an introduction, and the more detailed Tofu pages on
this site are in Japanese.  I can sort of piece together what's going on
by reading the code examples on these pages, but I know that I'm missing
useful information.

Can anyone point me to some more detailed English-language discussion
about the use of Tofu?

Thank you very much in advance.

-- 
 Lloyd Zusman
 ljz / asfast.com
 God bless you.