The HREF (Hypertext Reference) attribute is one that allows you to allow others to navigate through you web site. The HREF tag is places with the <A> tag and is usually associated with links to other web pages or pictures as well as audio and video media. Although it will work with media files you should instead use the <EMBED> tag for music and videos. Some situations the HREF attributes will be in are in the examples below.
EXAMPLES
E-mail
<A href="mailto: your e-mail.com>E-mail</a>
Link
<A href="http://www.how.to/computers">Passion Computers</a>
Link to an image
<A href="http://">Passion Computers</a>