There are also a lot of blog pages all over the web, which I'm trying to gather here. I'm opening comments on this page so if you find any good page elsewhere, please add a comment about it so it can be added to that list.
|Ensure field modules updates do not run before content.module updates||http://drupal.org/node/304813|
|Terminology: Unraveling the mysteries of the cck (and the cck docs)|
|What is the Content Construction Kit? A View from the Database||http://www.lullabot.com/articles/an_introduction_to_the_content_constru…|
|Moving CCK field changes from dev to live ("macro" method)||http://www.lullabot.com/articles/moving-cck-field-changes-from-dev-to-l…|