How to make my logo a clickable link on the expound theme?

Hi there Konstantin, thank you for such a lovely theme, it seems pretty easy enough to customize and use, unfortunately my coding knowledge is extremely limited. I’m trying to do a few things. 1. change the color of the header from blue to a dark yellow
2. make my logo image on the header clickable so that it takes you to the home page. I followed a few other tutorials and created a childtheme which piggy backs of the orriginal theme. but as far as making the image clickable i’m stuck can you help?
Thanks alot