Okay, so imagine you have a bunch of toys, like action figures and cars and stuffed animals. You can play with them by yourself or you can invite some of your friends over and all play together. When you all play together, you become a group.
Now, imagine those toys are numbers - like the numbers 1, 2, 3, and so on. And instead of playing with them, you can do math with them. So you can add them together, subtract them, multiply them, and so on.
When you have a group of numbers that you do math with, that's called a group. And when you combine that group with the idea of doing math with toys, that's called a group ring.
It's like taking your toy collection and adding some math to it, so you can play with your friends in a way that's both fun and educational!