I like how the correct, optimal suggestion is being downvoted by people who've never tried it, or who last tried it in 2022.

Suggest going through the papers (or the subset that interests you) listed at https://news.ycombinator.com/item?id=48822131 with a GPT/Claude/Gemini chat window open. Supplement with the Karpathy 'Zero to Hero' video series if it suits your preferred learning style. That will get you where you want to be, in terms of ML knowledge. It won't get you a job at Anthropic, but neither will a paid IEEE course.