Just wanted to add that `perldoc perl` give a listing of the perldocs available. Also, `perldoc perlmodlib` gives a listing of the standard pragmatics and modules which should be installed with perl. If you are creating code to be shared, you can use them without worrying if they're installed; they are.

On many systems, the perldocs are installed as man pages. That means, `perldoc perl` and `man perl` give the same response. But you can't use man for Perl keywords; you have to use perldoc. For example, `perldoc -f open`. There is no equivalent for man.