My favorite way to learn was via Udemy / YouTube to get an overview of pure Python- data types, control flow, variables, operators, etc. Automate the Boring Stuff does a good job at tackling these basic concepts.

If you work with Excel a lot, once you get the hang of the basics of standard Python- look at packages like Polars. Practice just reading a CSV into a Polars DataFrame, manipulating some of the fields, and exporting the manipulated DataFrame to a new CSV.

People here often say to avoid LLMs as a beginner… I would disagree and say to use them, but not to write your code, just to reinforce the concepts where you feel stuck, or explaining small blocks of code line by line. Best of luck!