I was introduced to the world of zines, and particularly one-page printable zines, through my colleague Mariana Smith. She is an artist and faculty member at Stockton University, where I teach, and uses zine-making with young and old for self-expression, art-making, instruction, and community development.
Here are some basic, direct instructions on making zines:
Here is a video on how to fold and assemble a one-page zine: https://www.youtube.com/watch?v=hFUkmo-aB70&t=306s
Here is another good one: https://www.youtube.com/watch?v=CLKfM8qb3Fs&t=75s
On each of the booklets, there is typically a tiny little set of scissors that indicates how far you will need to cut into the second fold.
Most of the zines I design are one-page, printable zines. These are also called 8 fold zines. With two folds and one simple cut, they are fun to make and magical in their ability to quickly and succinctly distribute information. I use them primarily for board games and card game rules because they fit neatly into portable travel games. They can also be used for distributing health information, self-help, and even designing and distributing coloring books.