The Field API is major new functionality in Drupal 7 to provide custom data types just like CCK did for previous versions of Drupal. The Field API team has written fairly thorough API documentation but that is more useful as reference material than as a tutorial or HOWTO handbook.
So, here’s your chance to tell the Field API team what you want to know how to do. Comment on this post telling us what we should explain.
One option is to give us the title of HOWTO pages you’d like to read, such as:
What is the difference between a Field, Bundle, and Field Instance?
How do I add a Text field to a node type?
How do I add an Image field to users?
How do I get a list of all defined Fields and Field Instances?
Special thanks to chx for having the idea and offering to write some of the articles! (No good deed goes unpunished…)