How to make an Image Grid that can be added to using react components along with HTML and CSS

I'm fairly new to react and I'm working on a little project to get myself familiar with the language. I'm trying to make a site with a grid of images in a way that when a url is entered, the image at said url will then be displayed in image grid. I think this can be done with an array of sorts but I'm having trouble figuring it out or finding help on it. Can anyone help me figure out how to go about this or point me to a useful article or site? Thank you