Learn how to handle windows and frames in Selenium WebDriver for effective automation testing. Explore window handling techniques, including getWindowHandle() and getWindowHandles() methods, and master switching between multiple windows. Dive into frame manipulation, understanding how to interact with frames, nested frames, and iFrames using switchTo() commands. Gain practical knowledge on switching back to parent frames and using defaultContent function. Apply these concepts to enhance your Selenium automation skills and improve cross-browser testing efficiency on platforms like LambdaTest.