If you're starting out, often going straight into the docs can be quite daunting. However on the Python docs there is this page with some useful links: https://wiki.python.org/moin/BeginnersGuide
Learn about what interests you. If you're interested in language models? Learn language models and transformers! If you're interested in time series - learn that!
But it is important to get a good overall understanding of AI so that you can make connections and build diversifiable skills. It's also important to learn the maths - ensure your calculus is solid.
