Hi,
I learned how to do it when I worked for a Bernina dealer. It is great for flip and sew methods. It used a lot of thread but serger thead is different and not any more expensive than regular sewing thread for the amount of work you can do with a spool. It is great for children's stuff and Linus quilts. You can do everything with a serger that you can do with a regular sewing machine except buttonholes. In the class I took we made a quilted pillow with a ruffle and a zipper. It was all done on the serger.