zsh

Adam's Zsh Page
News and advocacy for zsh.
http://adamspiers.org/computing/zsh/

User's Guide to the Z-Shell
Growing guide to using zsh.
http://zsh.sunsite.dk/Guide/

Zsh FAQ
From the newsgroup comp.unix.shell
http://www.faqs.org/faqs/unix-faq/shell/zsh/

Zsh Workshop
An advanced guide for Zsh configuration and use.
http://www.acm.uiuc.edu/workshops/zsh/toc.html