How to show multiple posts in category while having only one post on homepage?

Hola,

As the title says, I like to have just one post per page when people find the homepage. But if they click on the categories, I want them to show the entire archive of that category on one page so they can just scroll down and keep on scrolling until their eyes melt out of their head.

Seems like something simple but I haven’t figured it out yet cause I’m a nooooooob.

Thanks!