I haven’t used JavaScript and CSS seriously for many years now. These dinosaur-riddled posts provided good catch-up material for both: https://medium.com/the-node-js-collection/modern-javascript-explained-for-dinosaurs https://medium.com/actualize-network/modern-css-explained-for-dinosaurs

https://www.ted.com/talks/adam_grant_the_surprising_habits_of_original_thinkers