<ul data-eligibleForWebStory="true">React is a popular JavaScript library used for creating dynamic user interfaces.The learning journey in React often starts with understanding core concepts like ReactDOM, npm vs npx, JSX, Framework vs Library, and SPA vs MPA.ReactDOM is used to render React components into the actual DOM, serving as the bridge between React and the browser DOM.npm installs packages, while npx runs packages without the need for global installation.JSX allows writing HTML elements within JavaScript, enhancing code readability and ease of writing.React is categorized as a library as it focuses on the view layer, but can exhibit framework-like behavior with additional tools.SPAs load a single HTML file, change content dynamically without page refresh, offering faster user experience, like React applications.MPAs consist of separate HTML documents for each page, requiring full page reload for navigation, typical in traditional websites.React is well-suited for SPA development, providing seamless navigation and improved performance.