https://www.youtube.com/channel/UCW5YeuERMmlnqo4oq8vwUpg
- JavaScript library created by Facebook
- Also used by Netflix & Instagram
- Used to create JS-driven dynamic web apps
- In that regard, can be compared to Angular & Vue
- A layer on-top of React
- Help with state management of our app
- data in the app
- UI state of the app
- Learn this in the 2nd half of the playlist