Digital BW, The Print

Relative newcomer to BW digital processing. Someone here ref'ed Thomas
Zuber's website for downloadable BW toning photoshop tools. I found it
to be also one of the most lucid explanations of digital photo
processing I have encountered on the web.  The point of view is rooted
in the Zone system, which I miss from film days. His Tone Management
System seems dead-on to me.  Other opinions? Other similar sites?
Jonathan