alright, I'll try but its hard to explain. I'm a graphical person so words are hard to come by.

If you use the list command, "ls", you can see the directories and other files on your current location. If you want more help, type in "man ls". I assume your distro has man pages installed but maybe not. If not just google, "man ls". I like to use "ls -hilt" which will list in an easy to read format

So now you know what is at your current location. So type "cd [some location]" to go to [some location].

Now I think you want to find out where your USB drive is. Well, I suggest typing "ls ../../" and DON'T hit Enter. Hit the TAB and you should see the structure of the directory above your home directory. Does this make sense? OK, now complete "ls ../../" with a directory you would like to search. The "../../" means one-up.

Hmm, I found a website that might better explain:

http://arachnoid.com/linux/shell_programming.html

I think it would be useful for me too.

Linux is best!