Hi Piero,
You put a lot of questions on the list. I hope I can help you with at
least two of them: the manuals of GRASS (I suppose you mean the stuff you
get when you use the g.manual command) can be viewed with the nroff
command.If you mean the printed versions, they usually are in PostScript.
Secondly, if you don't want to waste all your time getting GRASS of the
net, there are distributors both in the US and Europe who will sell you a
tape or CD. Nieuwland (Postbus 522, 6700 AM Wageningen, The Netherlands)
will be able to send you a copy, including printed manuals. And would you
be so kind as to include your e-mail adress in your messages, so we can
answer this kind of questions directly to you?
Good luck!
Philip Verhagen