If this is your very first experience with Perl you could take one step back and write a "Hello world" program. A hello World is a trivial program to print "Hello world." on your screen. Once you have achieved that you know how to enter the program and run it. In Perl the code is:

use strict;
use warnings;

print "Hello world\n";
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If you can't get that to run you need to tell us what operating system you are using at least and how you have installed Perl.