Should I learn useMemo and useCallback early?
You should understand them, but not overuse them. Learn when not to use them as much as when to. Premature memoization adds complexity without benefit, so measure before optimizing.
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More FAQs in A Step-by-Step Roadmap to Mastering React Hooks
Learn useState first, then useEffect, then useRef, useContext, useReducer, and finally useMemo and useCallback. After those, learn to write custom hooks. Each hook builds on the understanding of the previous ones.
useEffect. The dependency array, cleanup, and the timing of effects are confusing at first. Most beginners struggle with infinite loops and stale data here, so spend extra time on useEffect.
After you are comfortable with the built-in hooks. Custom hooks are where hooks truly click, because they let you extract reusable stateful logic. Once you can write your own hooks, you understand the full power of the hooks model.
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