Learn to build a web application using Flask and SQLite in this comprehensive 42-minute tutorial. Explore the integration of HTML, Jinja templating, CSS styling, and JavaScript for client-side interactions. Follow step-by-step instructions to connect a SQLite database to a Flask server, preprocess data, create dynamic HTML templates with Jinja2, and implement form options and checkbox elements using database entries. Discover how to utilize Flask Sessions for global data management, apply CSS styling, and incorporate JavaScript for enhanced user interactions. Deploy the application to both development and production environments using Wayscript. Gain hands-on experience with practical examples, including a complete Groceries App, and learn how to run Flask locally on Windows and Linux machines.