Best Books/Courses/Channels to Leapfrog on AI/ML Material

Assuming I have been on hibernation since 2018-19 time frame, which materials - books, MOOC courses and YT channels would be recommended for me to get started with understanding all the current progress on AI/ML. Ideally a resource like TeachYourselfCS that can give structure and roadmap to navigate all the progress/knowledge on the domain would really help.

Do we have to take different approaches to understand LLMs vs other type of ML models which have been in large scale deployment/usage from pre-2022/21 time frame?

Thanks a lot in advance.