By read the documentation I mean you have to read and understand it. Why not do that? Brief example:

#!/usr/bin/perl

use warnings;
use strict;

use LWP::UserAgent;

my $ua = LWP::UserAgent->new;
$ua->get('http://www.perlmonks.org/?node_id=6364&user=win&length=40&or
+derby=lr&start=0&showtype=&sexisgood=Search', ':content_file' => 'out
+put.html');
[download]

Martin