Upping my Generative AI game

I'm a pretty big user of AI on a consumer level. I'd like to take a deeper dive in terms of what it could do for me in Data Science. I'm not thinking so much of becoming an expert on building LLMs but more of an expert in using them. I'd like to learn more about - Prompt engineering - API integration - Light overview on how LLMs work - Custom GPTs

Can anyone suggest courses, books, YouTube videos, etc that might help me achieve that goal?