Advanced React

After the React Basics cert, I wanted to go deeper. This course covered the patterns I kept seeing in production codebases but didn't understand — compound components, render props, and custom hooks.

The performance module was a wake-up call. I learned how unnecessary re-renders were silently killing my apps' performance. React.memo, useMemo, and useCallback finally made sense when I profiled real components.

The biggest takeaway was learning to think in terms of data flow rather than UI structure. That shift made my components more predictable and easier to debug.