All this talk about Sergers has me interested in trying it out... 15-20 years ago when I worked at Cloth World (anyone remember that name before they became JoAnn's??) while in school, my mom bought a serger with my employee discount. I'm sure it has been in her closet for about that long...
There is a great continuing education program here in town, and they offer a serger class

... it's not cheap but it's a total of 12 hours of instruction. I think I might have to sign-up (after this last semester of grad school ends in November!!)
Here is the class description:
Almost all clothing commercially sold today is made with a serger. Sergers are multi-dimensional tools that take sewing to a new level. They make projects (clothes, crafts, and home decorations) look professionally constructed and finished. This class will get you up and running. Learn about threading, tension adjustments, inside and outside corners, curves, basic garment construction, troubleshooting, and different types of serger stitches. Gathering, ruffles, elastic application, rolled hemming, and flatlocking are just some of the techniques covered. The only prerequisite for this class is that you be able to take your machine out of its box. You'll make samples of the techniques on your own serger.