http://www.perlmonks.org?node_id=915602

Many people search PM for stuff about Catalyst and I for one would have really appreciated a down to earth guide on the matter, so hopefully it well help someone else:

http://wiki.catalystframework.org/wiki/best_practices/models_definitive_guide

Update

It seems that the Catalyst Wiki Site is down so I posted a local copy here and will maintain both:

Catalyst Models Definitive Guide