here is my list of links which I found as useful:

• Api Docs of CakePHP - the main source of knowledge about the core functionalities.
• New CakePHP 1.2 manual - so far not fully completed, but the explanation is much better than the official manual so far.
• Cake 1.2’s Set class eats arrays for breakfast! - Good explanation how to use the Set::extract method
• New CakePHP Wiki Style site - Site which AIM to provide new way of creating CakePHP documentation.
• New router goodies - Article explaining how to use CakePHP router in more advanced ways
• Migrations - the CakePHP way(?) - nice how to explaining database migration changes using CakePHP.