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In this tutorial, Ralph demonstrates how to utilize JavaScript to check a basic form for empty text strings. He begins by outlining the structure of a web page, featuring a heading, and proceeds to create a simple form. The form consists of two text boxes for first and last names, including appropriate labels and input fields. He includes a submit button with a dummy action. To enhance the form's structure and validity, he encapsulates everything within fieldset tags. Ralph's approach focuses on keeping the form straightforward while ensuring proper organization.