A few months ago, my son bought a cute mini-zine from the Zine Machine vending machine at The Bindery in San Francisco's Haight-Ashbury. What we noticed right away is that the 8-page zine was ingeniously folded from just a single sheet of paper. In the above video, Austin Kleon, author of the wonderful Steal Like An Artist, explains how it's done. And Umami Design posted a layout template here.
In the video clip, Austin recommends this book by Esther Watson and Mark Todd that looks like fun: Whatcha Mean, What's A Zine? The Art of Making Zines and Mini-Comics.