The official website of Ubuntu Linux, the most popular linux distribution nowadays for easy installation, distributed as live CDs. It has a wiki for support.
The Japanese community of Ubuntu Linux. They distribute their own packages for Japanese on their own repository and the Japanese Remix CD with the packages. You can get supports on its forum. And there's also a wiki for built-up information.
A derived distribution of Ubuntu Linux. It's much reffred as a distribution with MATE and Cinnamon, similar to Gnome 2 and forked from Gnome by incovenience of Gnome 3 and of Unity. I installed its MATE 64bit edition, too. It has a community and a forum.
The official Archive of the Perl. You can see many modules for Perl. When you want to program with Perl, much better to see this site.(I haven't traced it yet,though)
Web Applications: Perl Scripts on CGI
subtitle:- Making interactive pages with free software -. I got a counter and web boards here.
A very popular website distributing Minibbs and so on.
Explanation of Perl/CGI and distribution of Perl/CGI scripts.