useState

1. Show counter example
2. Explain async behavior
3. Function as initial state
4. Update object fields in state

useEffect

1. Difference between presence dependency array and it absence
2. Run function on mount
3. Run function on change in dependencies
4. Return function

useRef

1. Difference with useSate
2. DOM element
3. Connection with useEffect -> previous value

useMemo

1. Optimize some computed functions
2. Listen to changing object reference

useCallback

1. Difference with useMemo
2. Optimize some callbacks

useContext, useReducer

1. Create context Provider, useContext(), useReducer()

custom hooks

1. Input examples