After posting an example of the Drupal form_alter hook, I thought it could be useful to post a list of places where you can find extra information about the Drupal forms system.
Official Drupal pages
These are pages form the Drupal API. They serve as a fantastic starting point for any new Drupal developer, or as a place to come for a quick look at the available features.
Lullabot
Lullabot is the place to learn Drupal online (except here, of course!).
Extra Stuff
This is a list of pages that provide other information about Drupal forms.
- An interesting dscussion on the basics of form building
- A guide to using a module to build forms graphically
- The Webform module
If you know of any others, please post them in the comments below!
