perlmonks, perlreftut, Data::Dumper; personally, I really liked the programming perl book. I called it the bible for a long time. That was back in the 2nd edition epoch I think.

If you're like me, you'll get a lot out of perl -MData::Dumper -e 'print "", Dumper([ {lol=>7}, qw(oh, I get it) ]), "\n"'...