How do I stop Google indexing a particular page on my site?

There are several ways to stop Google and most other search engines indexing a page. The simplest is to use a “noindex” metatag on any pages you don’t want indexed. Here’s the HTML code, in context. (Obviously the text between the <title></title> tags is just there for show and is not relevant to the workings of the code!)

<html>
<head>
<meta name="robots" content="noindex" />
<title>Search Engines Will Ignore This Page</title>
</head>