Here is a simple script that fetches a web page with LWP::Simple:

#!/usr/bin/perl -w

use strict;
use LWP::Simple;

my $content = get('http://www.perl.com');

#do something with the $content

print $content;
[download]

From your post, I see that you are retrieving information from web pages. You didn't say what sort of information, but here are some of the more popular modules that people use to parse web page elements:

Short Description	HTML::* CPAN Module
Extract Table Information	HTML::TableExtract
Fetch all URL links on the page	HTML::LinkExtor
Parse and create form attributes	HTML::Form
Generate summary of content	HTML::Summary
Everything else	HTML::Parser