This document provides an introduction to web design and SEO topics including HTML, CSS, and resources. It explains that HTML is the underlying text format that web browsers understand, and provides examples of common HTML elements like paragraphs, links, images, and lists. It then discusses how CSS is used to style HTML elements by applying properties like font sizes, colors, and more. Layout examples are given using CSS and div elements. Finally, useful online resources for practicing HTML and CSS are referenced.