Ask HN: Online courses with video, text, quizzes or a mixture - which is best?

What type of instruction works best for you when learning a tech-related course? Or do you combine different course teaching approaches?

Examples of different teaching approaches:

- Text and interactive exercises (e.g. 'educative', 'codecademy')

- Video (e.g. Udemy, Pluralsight, YouTube, LinkedIn Learning)

- Video and interactive activities (e.g. Scrimba)

- Books (printed or ebook)

For me, I have found video is massively varied. Some instrutors know the expertise of the subject but are not good at teaching. The best instructors have a good understanding of their subject but also engaging and excellent at explaining their subject. Also, overly long videos can make watching video a chore. But there are always exceptions (e.g. Hardvard online CS50?)

What is your experience when taking a tech course (video, text, quizzes, interactive, books etc)? What do you prefer and why?