So, you know how sometimes you make a really cool drawing and you want to show it to your friends or even your mom and dad? Well, imagine you write a really cool book instead of drawing.
Now, university presses are basically like companies that help you share your book with the world! But instead of just showing it to your friends and family, they help you print lots of copies and share it with lots of people.
These university presses are usually run by universities and they help publish and distribute books written by professors, researchers, and other smart people who want to share their knowledge with the world. So, instead of just sharing their ideas in class or at conferences, they can spread their ideas to lots of people all over the world with the help of university presses.
And that's how university presses work - they help authors share their ideas and knowledge with lots and lots of people.