I want to write code that rotates or "slides" over to different entries:
Here's a basic example:
http://ualr.edu/
Is this done using php?
If not, where would I look to create something like this?
It's done via JavaScript. That's not to say that PHP or some other server-side language might not be involved in generating the content, but the actual visual effect is done client-side via JS.
Do you know of any tutorials that would give me a basic understanding of how to put something like this together, as I'm not very familiar with javascript?
Off-hand, no. There are all sorts of JS tutorials at www.w3schools.com that you could check out. There are also numerous JS libraries out there that probably have code you could use (such as "MooTools").