WordPress.org

Installing is pretty easy takes only a few minutes.

1. Upload 'random-one-cat-widget.php' to your '/wp-content/plugins/' directory.

2. Activate the plugin through the 'Plugins' screen in WordPress.

3. On the 'widgets' sub-menu of 'Design' you will find a new widget type 'Random One Cat'

4. Add one or more of these to your display and select a title and category. Decide if you'd like to see the post title or custom fields. Save your settings.

5. You're done.