A comparison of several Un*x shells
This is Brian Blackmore's hypertext FAQ on Un*x shell differences. If
the connection is refused (this is a heavily loaded server) the
non-hypertext FAQ may tell you what you need.
Introduction to ZSH
This is the HTML'ified introduction derived from the
texinfo version created by Jonathan Hardwick
<jch@cs.cmu.edu>. Beware that it is pretty old, though,
and may not reflect the current state of zsh well.
The
PostScript of Paul Falstad's introduction is also available. The
latter is not hypertext, but you can download and print it at your
site, or view it with an external PostScript viewer.