Join Joe Chellman for an in-depth discussion in this video Exercise files, part of jQuery: UI Widgets.
If you're a Premium member of lynda.com, you have access to the Exercise Files for this course. I've downloaded them here to my desktop. So, as you can see, there are several numbered folders. These map onto the different movies of the course. First, second, third and so forth. Some of these, have only start states, others have start and end states. If I've changed the files from the beginning of the movie to the end. There are also a couple of folders that are shared across several lessons. If you're not a premium member of Lynda.com, you can still follow along. You'll just need to do some typing on your own.
This course is a short companion piece to jQuery for Web Designers. See that course for information about building your core jQuery skill set.