Six Revisions has dissected a html web page and compared it to the human anatomy. This is an interesting comparison and might make it a bit easier for a beginner to learn how a web page is laid out.
Many people find it hard to picture a website as more than a bundle of content. This often makes explaining the mixture of languages used and the way everything comes together a difficult task.
http://sixrevisions.com/web-technology/anatomy-of-a-website/