You can link an image just as you link text. To do this, use this format:
<a href=nextpage.html"><img src=image.jpg"></a>
Note that the linking code is sandwiching your image. Here's another example:
<a href=http://www.widgetdesigns.com/"><img src=table.jpg"></a>
The image named "table.jpg" will appear on your page; if you click it, you'll open the web site, widgetdesigns.com.
Note: Remember that image names and links are case sensitive; in other words, "subdirectory_1" is not the same as "Subdirectory_1," and "logo.jpg" is not the same as "logo.JPG." Be sure to type your file name exactly as it appears in your File Manager. If a file isn't referenced correctly, the browser will return a "Page not available" error.