I love my Holgas! I have four of them, each loaded with a different kind of film, so I can get different views on images. 120 film is larger than "regular" 35mm film and it is normally shot in square images. You get 12 square images on a typical roll of 120 film. It is called medium format film. The Holga is famous for being made of plastic and having all sorts of built-in flaws so you have an artistic result rather than a perfect one.
Here is the different kind of photography I've done with my Holga.
Black and White
If you're interested in learning more about Holga film photography, be sure to check out my ebook - Plastic Camera Basics -
Lisa Shea Photography - main page
I have tens of thousands of photos throughout this website as well. Let me know if you're interested in one.
Enjoy your day!