hacker_grid is a responsive theme for Ghost, based on hacker_chic. It uses css grid, but falls back reasonably gracefully in browsers that are not grid compliant, like IE and Edge.
Create a blank page called Topics and hacker_grid will automatically fill it with a list of tags your blog uses, sized according to how many posts use each tag.
Using <aside> will give a nice pop-out effect.
The Nav menu appears in the footer. Add nav items in the Ghost admin area.
This section will pick up your Twitter account from @blog info, but you'll need to manually adjust email, GitHub and eanything else you want to add.
This will pick up the subtitle of your blog as the copyright owner. Change it if you like.