Here is the outline of the Drupal 9 Training course. This course covers all the level of developers starting from site builders and goes to all the way through a back end developer. Upon completion of this course, a developer would be able to work on all the aspects of a Drupal 9 website, be it configurations at admin side, building themes or integrating any third party API at front end or building custom modules.
|0.1||Drupal 8 File Structure|
|2.1||Managing Drupal 8 Modules|
|3.1||Drupal 8 APIs|
|3.2||Building Custom Drupal8 modules|
|3.3||Building Custom Drupal8 themes|
|3.10||RESTful Web Services|