No Nonsense is a free theme for WordPress created by danielpataki.
A simple modern theme which allows you to blog in peace without bloat. Well documented for developers and users alike and allows for tons of customization to get the look you want.
(Description "No Nonsense" Theme from wordpress.org)
You can download No Nonsense for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of No Nonsense Theme can be found here.