Well Franki and I (“I” because I throw in sarcastic comments during development in order to claim a contribution) have added a couple of more primers to the successful series on the htmlfixit.com site:
# Perl Primer 013 Advanced data constructs An array of hashes
Here we take a brief look at creating and using an array of hashes.
and
# Perl Primer 014 Advanced data constructs A hash of hashes
Here we take a brief look at creating and using an hash of hashes or Multidimensional array.