hi markos<br>
i was in the same situation about 18 months ago and one of the sites
which really helped me install GATE was
<a href="http://www.stanford.edu/~afoudray/MIIL/gate.html">http://www.stanford.edu/~afoudray/MIIL/gate.html</a><br>
this description is for a different distribution of linux to what you
have although many of the steps are common to all distros i assume.<br>
<br>
for basic linux commands download and print to keep as a reference (i still do!):<br>
<a href="http://homepage.powerup.com.au/~squadron/linux_manual.pdf">http://homepage.powerup.com.au/~squadron/linux_manual.pdf</a><br>
<br>
for a basic intro to linux tutorial check out<br>
<a href="http://www.uow.edu.au/eng/phys/rpg/docs/tutorials/Tutorial_1_Introduction_to_Linux.pdf">http://www.uow.edu.au/eng/phys/rpg/docs/tutorials/Tutorial_1_Introduction_to_Linux.pdf</a><br>
<br>
this was a course which at my university run in our small centre for undergrad/postgrads unfamiliar with Linux and GEANT4.<br>
<br>
cheers and good luck.<br>
lucky<br>
<br>