If you don't have a linux operating system grab yourself a live cd here: http://slax.hosting4p.com/download.php
I after your in your distro you have to get into command line. This will vary from distro to distro so I recommend you google it if you don't know where it is.
Lets get started for my EEE pc I just hit atl+ctrl+t and the terminal pops up. Your screen should look somewhat like this:
Now the first command we are going to try is "ls" so just type in ls and press enter. After you do this you should be presented with something like this:
ls basically list any directories or files in your current directory, which brings us to out next command pwd. This prints out the current directory like so:
Well thats it for this tutorial. See you in the next one.