Use the perl index: qq

This Index should contain pointers to all the available things you wil
+l find or expect in Perl 5 such as:

    * built in variables
    * function names
    * operators
    * flow control structures
    * special characters of regular expressions
    * exported functions of standard modules
    * names of functions in other languages with the corresponding nam
+es in Perl.....
[download]

Real good thing to know about, ++ to szabgab :)