The document discusses various HTML tags for formatting text, including <B> for bold, <EM> for emphasis, and <BIG> for large text. It explains the structure of an HTML document with <HTML>, <HEAD>, and <BODY> tags, and how the <BODY> tag can control page colors and backgrounds. The document provides examples of using tags like <H1>-<H6> for headings, <CENTER> for centering content, and <FONT> for changing text colors and sizes. It also covers <A> tags for hyperlinks, <IMG> tags for images, and attributes like SRC and ALIGN.