A fresh concrete5 Install comes with sample content. I suggest also installing the add-on Theme Switcher. http://www.concrete5.org/marketplace/addons/theme-switcher/...
Then you can add multiple themes to the site and switch between them easily to see which you want to use.
http://www.concrete5.org/marketplace/addons/theme-switcher/...
Then you can add multiple themes to the site and switch between them easily to see which you want to use.