The Ultimate Guide to HTML Learn what HTML is and how to write it. Then learn its most common elements and attributes. The Beginner's Guide to HTML and CSS for Marketers Basic definitions, differences, and codes to know for your website. Download Now 19 min remaining How do we talk to computers? Before the advent of speech recognition technology, we couldn’t rely on human speech to communicate with them. Instead, we created new languages that they could understand. Arguably the most important of those languages is HTML. HTML is the foundation of most web pages. It’s how we tell browsers to structure content into titles, headers, paragraphs, images, links, lists, forms, tables, and more.