Just installed Ubuntu, what now ?

[Boyan R.]

I've installed Ubuntu 5.10 today, without any problems.
Since I'm not familiar with Linux, only thing I managed 
to do until now is to change wallpaper.

First of all, my sweex ISDN modem (Winbound w6692 chipset) doesn't work,
and I'm affraid I can't do anything about that, so I'll just skip to
the simplest problems first, so here is first set of my questions:

- I downloaded Konqueror - file:   krusader_1.70.0-0breezy0_i386.deb
  How do I install it ? Archive manager can't unpack this file.

- Where should I install it ? Is /home/konqueror/  ok ?
  I assume "home" dir is something like "program files" in windows

- Is there anything like Console (like Windows DOS console) ?
  I saw at my friends PC (SUSE linux) that he uses some sort of console. 

- How do I start Midnight commander ?

- If I can't, or it's too complicated, how do I install Gnome commander ?
  I downloaded file:  gnome-commander-1.1.7.tar.bz2

Also, can you tell me generally, what can I do with this linux 
(without internet) ? Can I listen mp3 music and watch divx movies 
and what programmes should I get for that ? 
What else can I do (simple stuff ofc) ?