Welcome to the Drupal developer's documentation. Newcomers to Drupal development should read the conceptual information provided in the "Components of Drupal" section, and then proceed to examine one of the heavily-documented example modules below. The examples are fully-functioning Drupal modules, so you can download them from the contributions repository and alter them as you experiment.
- A few components of Drupal
- Module system (Drupal hooks)
- Database abstraction layer
- Menu system
- Form generation
- File upload system
- Field API
- Search system
- Node access system
- Theme system
- Constants
- Global variables
- Example modules
- In-depth discussions
- Forms API Reference