Many of my coaching clients want to know how to swap images or testimomials on their wordpress site. Lorelle has done a wonderful job of explaining the options

Another option for rotating images and header images on your wordpress blog. This option requires changing the theme which is not terrible, but there are more options available.

Rotating images on a Wordpress blog is not terribly diifficult, and this plugin makes it even easier. I want to swap testemonials on my site so visitors can learn more about what we do, and this theme will help.

Another simple solution for rotating your header image in a Wordpress blog, and this can be used for rotating images and testimonials.

A step by step instruction for implementing a rotating header on your Wordpress blog,