Embark on a comprehensive journey through React JS in this beginner-friendly tutorial designed for 2021. Master the fundamentals of this powerful JavaScript library for building user interfaces through hands-on exercises and practical examples. Begin with installation using VSCode, create your first project, and explore the React JS app structure. Learn to use developer tools, create React elements and components, understand JSX syntax, and work with properties (props). Dive into rendering lists, conditional rendering, React Fragments, and arrays. Explore React Hooks, including useState and useEffect, and learn how to fetch data. Conclude by deploying your React JS app, equipping you with the skills to build dynamic and interactive web applications.