Latest announcement on Moodle.org

Are you interested in learning more about Moodle programming? – read more

Want to learn more about the development and programming of Moodle? Join the Moodle Programming course.

Course Description:

This course will provide an introduction to skills needed to create a Moodle block. Participants will examine accepted Moodle coding guidelines, including security and documentation issues. The course materials are designed for Moodle version 1.8.

This looks like a great course for programmers wanting to learn more about Moodle. It is hosted on Moodle.org. Take a look at the course syllabus.