learning in-depth terminal commands
 

I just did my first Linux install (RH9), and I've come to appreciate how powerful and fast it is to work from the terminal...I have this RH9 Bible book, and it's great - it gives a lot of examples using the terminal, but it doesn't always go in-depth about exactly what commands do, and which part of the command is performing or specifying which actions. So what's the best way for someone to go about learning to become a terminal power-user ?

Man pages, my friend. Every decent command has its own manpage. You may even have info pages. For example, to learn about the ls command, type :
man ls
or

info ls

And you'll find out a bit more.

cheerio,

René

That's great.

I found this webpage: http://www.mcsr.olemiss.edu/unixhelp/

That is for Unix commands...will all/most of this necessarily apply to Linux ?