React Docs - Main Concept#8 Lists and Keys
React Docs - Advanced Guides "Refs and the DOM"
React Docs - API Reference > React Top-Level API
React Docs - Main Concept#5 State and Lifecycle
React Docs - Hooks #1 Introducing Hooks
React Docs - Hooks #2 Hooks at a Glance
React Docs - Hooks #3 Using the State Hook
React Docs - Hooks #4 Using the Effect Hook
React Docs - Hooks#5 Rules of Hooks