Current Perl documentation can be found at perldoc.perl.org.

Here is our local, out-dated (pre-5.6) version:

When you build modules, use the PREFIX option when generating Makefiles:

    perl Makefile.PL PREFIX=/u/mydir/perl

then either set the PERL5LIB environment variable before you run scripts that use the modules/libraries (see the perlrun manpage) or say

    use lib '/u/mydir/perl';

See Perl's the lib manpage for more information.