HTML is the code on the other side of what you see in the browser window, or what I like to refer to as "backstage". To see what it looks like simply go under "View" in your web browser and select "Source".
HTML (HyperText Markup Language) is composed of tags, an opening tag<> and a closing tag</> Within these tags are "keywords" define its effect on the web page. For example <B>text</B> "B" = "bold". Its effect is to make the text contained withing the tags display in a bold font on the web page.
The HTML code for a simple page of text would look like this:
For detailed explanations of all the tags and tutorials that show you how to use them see the Links to HTML Sites.
For an instructive guide that offers good explanations of HTML basic coding with examples for creating FRAMES and TABLES check out the HTML Starter's Guide.