How to RTFM

C:\dev>perldoc par
NAME
    par.pl - Make and run Perl Archives
...
C:\dev>perldoc PAR.pm
NAME
    PAR - Perl Archive Toolkit

...
C:\dev>perldoc PAR::FAQ
NAME
    PAR::FAQ - Frequently Asked Questions about PAR
...
C:\dev>perldoc tkpp
NAME
    tkpp - frontend to pp written in Perl/Tk

...
C:\dev>perldoc pp
NAME
    pp - Perl Packager
...
C:\dev>

If you know it's name, its easy to learn about it :)