Ask HN: What are the topics a beginner web developer should know?

Hi all, I'm a web developer with around 6-7 years of experience but lost touch with it since past 4 years. I know the basics HTML, CSS, JS , and Django. And based on that I want to create a basic course for people who want to break into web development. What topics should I cover ? Are the basics enough or the new age frameworks like Angular, ReactJS , Vue JS etc are mandatory for beginners? I am just afraid my course shouldn't become outdated.