Okay kiddo, have you ever heard of a comic book? It's like a little book with pictures and words that tells a story. Well, a minicomic is kind of like a really small comic book, only about the size of your hand.
A minicomic co-op is when a group of people get together and share resources to make their own minicomics. They might share things like paper, ink, and ideas, and they might even take turns printing and assembling the minicomics.
The cool thing about a co-op is that everyone gets to help out and contribute, and everyone gets to make their own unique minicomic. And when they're all done, they can trade their minicomics with each other or even sell them at a comic book convention or online.
It's kind of like making your own little book club, only instead of reading books, you're making your own comics!