To setup your blog, is very easy. Navigate to Settings > Reading and select the page you would like to use as the blog page, as you can see in the image below.
Once you save the settings, you can access the blog at this address: http://your-website.name/blog.
Generous provides more options to customize the blog page’s appearance and they can be found under Appearance > Generous > General tab
As you can see in this image, these are the default values the theme uses to display the blog page.
You can customize the layout by using the “Blog Columns” option to set how the number of columns (max 4 column possible).