Could someone provide a link of material where to start with Perl 6? Also could someone point to real application already developed with Perl 6?
Rakudo is the droid you're looking for. Rakudo is an almost completely working Perl 6 implementation, currently the best approach to Perl 6 you can get.
- You can download compiled packages or build it from source
- Perl 5 to 6 - Perl 6 for Perl 5 developers
- The Perl 6 Wiki
This seems like a good place to start... http://dev.perl.org/perl6/
Contrary to Zoran's assertion, dev.perl.org/perl6/ is out of date in many places.
I'd recommend the community-driven alternative instead: http://perl6.org/
The probably largest Perl 6 application today is the November wiki by Carl Mäsak and Johand Viklund: http://november-wiki.org/
If you already know some Perl 5, this is a good place to start: http://perlgeek.de/en/article/5-to-6
If you don't know Perl 5, your best bet is a Perl 6 book currently in development: http://github.com/perl6/book/ (go to the download section and pick the latest .pdf there).
A nice resource (at time of writing) for people who already know Perl 5 is the Perl 6 Advent Calendar