Well there are tons of good WordPress plugin development course at Udemy. There are also some in YouTube. In my honest opinion, there is no such thing as a real good course because there are tons of courses out there in the wild. If there is a good one, another person or two wouldn't be posting a new course related to the that topic with the same content. Everything, depends on what you see and your understanding about the course. Some just change the terminologies and make them more complex.

You can check out tons of YouTube tutorials instead of relying on courses because its bad to waste money on something that you can just find on the internet freely. I saw courses that costs around 50$ or more but the content can be just found on YouTube or anywhere online. You should search on other threads also and do not rely too much on just one search engine like google. Other search engines also exist such as Yandex, Baidu and many more.



If you are having a hard time with YouTube, there are also books and blogs that you can have a look. Just test the waters and you are good to go.

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I'd just go the route of going through YouTube tutorials, then going straight into using StackOverflow while developing my own app. Real world project based learning is the best in my opinion.

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