there is LOTS of other info out there.
http://www.linux.org/docs/index.html
http://www.tldp.org/

there are loads more.
linux from scratch is a ral DEEEP dive into linux and how things work, so is build your own linux ...

lots of info, more trouble narowing the search than getting info.

btw floppix.com have a fairly complete crash course in console linux (and a fun little linux dist aswell).
http://floppix.com/labs.html