You can clone with
HTTPS or Subversion.
Ubic's source code is available at https://metacpan.org/release/Ubic and http://github.com/berekuk/ubic.
IRC channel: irc://irc.perl.org#perl.
Mailing list: http://groups.google.com/group/ubic-perl.
A good way to start with ubic is to read manuals:
Slides from the Moscow.pm meeting in November 2010: http://www.slideshare.net/berekuk/ubic-slides-moscowpm-meeting-nov-2010.
Early slides from YAPC::Russia 2010 can be found here: http://www.slideshare.net/berekuk/ubic.
Ubic presentation for Perl Workshop 2012 Israel by Thomas Maier: http://hayzer.github.com/ubic-presentation/.
There are several ubic-related posts on blogs.perl.org which can be used as tutorial: http://blogs.perl.org/mt/mt-search.fcgi?blog_id=310&tag=ubic.