1) Full stack web development involves mastering both front-end and back-end development skills to build complete web applications.
2) Key advantages of full stack developers include their versatility in building full applications, experience across the full development stack, and ability to handle all aspects of development from troubleshooting to upgrades.
3) Core components of full stack development include front-end skills like HTML, CSS, and JavaScript for the user interface, back-end skills like PHP and Node.js for application logic, databases to store data, and version control systems like Git to manage code changes.