http://www.perlmonks.org?node_id=515560


in reply to Preparing for brain bench certification

Read up on the camel book, the perl cookbook, and to some degree "Learning Perl Objects, References & Modules". Memorize all the special variables like $!. Know what all the built-in functions do like map, grep, sort, and format. Learn regular expressions and their modifiers like i and x. Bit operands. Passing variables to functions (i.e. shift and @_). difference between a literal and a reference.
-imran