Ask HN: The ML/AI space is overwhelmingly large. Where to start?

I'm a "traditional" software engineer with many years of experience in web technologies. I feel fascinated by ML/AI technologies, but I don't know where to begin to learn about it. I am also not even sure yet if it's something I would enjoy, so I want to find the best way to maximize my investment of time vs return in experience and skill. I am specifically interested in computer vision and natural language processing. Where should I begin? Is Andrew Ng's course still a good starting point? Or the D2L.ai course?