a week somebody will ask you a question and they'll realize oh we can make this better so they'll refresh the content so so for example if you if you look at this so it's kind of small but here's the current cago learn everything from python machine learning data visualization sequel micro challenges and the new one machine learning explained ability maybe you know those things but maybe you want a refresher it's really really fun and easy to go through so I'd recommend checking out one so here's like this one on