Hey there, new to Typesetter. How would I go about with making a static HTML site with CSS get to work with Typesetter? Would I need to make a theme, and if so what would be the best way to go about it?

Typesetter offers - especially the github master - several  themes , and there are also further downloadable themes. 

As Typesetter uses ckeditor in the site, all You have to do is to choose a theme and then make the sitetree in the pagemanager.

After that You can go into a site, then You can mark your html - site in the browser and paste it into the empty Typesetter site.

You can also try to paste the source of Your html- site into the source of the empty typesetter site. Evtl. You will have to rework the code of the site a bit, depending upon the template.

At Typesetter demo You can exercise this.

 

Awesome, thanks! And where do I place my css stylesheet?

There are 2 possibilities:

1. You can append it to the style.css of the template (in /templates oder  /data/_themes )

2. You can go to the right top of the site into the layout-editor and insert it into the default-template (not with less-templates)