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Courses for WordPress
The Complete WordPress Website Business Course
https://www.udemy.com/course/the-complete-wordpress-website-business-course/
A course hosted by Udemy about how to build a website business using WordPress.
Become a WordPress Code Developer Course
https://www.udemy.com/course/become-a-wordpress-developer-php-javascript/
A popular course that goes into the details of programming within the WordPress environment itself.
From their site:
Open source software which you can use to easily create a beautiful website, blog, or app.
An immensely popular beginner level course for WordPress hosted by Udemy