Learn JavaScript by building a calculator from scratch in this practical, hands-on tutorial. Begin with the basics of setting up your development environment, then progress through creating a user interface, working with the DOM, handling events, and implementing functions. Explore advanced concepts like arrow functions, expression evaluation, and conditional statements. Adapt the project for mobile devices, enhance it with CSS, and utilize arrays and loops. Conclude by mastering debugging techniques to troubleshoot your code effectively. Access source code for each chapter to follow along and reinforce your learning throughout this comprehensive JavaScript programming experience.