Driver.js is a lightweight, versatile JavaScript library that facilitates the creation of guided tours and user focus highlights for web interfaces, aiding businesses in improving user experience by clearly demonstrating product features and usage. Written in TypeScript, this library is highly customizable, working seamlessly across all major browsers and frontend frameworks without dependencies, and is accessible with keyboard navigation support. The tutorial demonstrates its implementation in a web app, showcasing features like contextual popovers for specific elements and multi-step tours for comprehensive user guidance. Additionally, Driver.js offers customization options for popover styling, allowing users to modify button text, overlay colors, and integrate custom fonts to align with brand aesthetics. Despite its simplicity, Driver.js is capable of advanced functionality beyond initial impressions, as further explored through its documentation and example projects.