those fundamentals the other piece of that is I spend a lot of time learning and relearning pandas every time there's a new addition I learn what's new and I also scan the API for things that oh maybe I didn't realize there was something cool there so strengthen the fundamentals of whatever you need to learn the second big chunk is your core work and your core tools so this is whatever you're doing for your project your problem you know the work you do at work for me is a kaggle data scientist a huge amount of that is domain knowledge so