Disable posts, comments, feeds, and other blogging features. A must-have plugin to turn WordPress into a non-blogging CMS platform without code.

Just install from your WordPress "Plugins > Add New" screen and all will be well. Manual installation is very straightforward as well:

WPO Optimizations, Improvements and Tweaks to Speed Up WordPress

Clean your site, Improve your Page Speed Grades for Google Insights, GT Metrix and Pingdom Tools. Reduce Loading Time removing unnecessary code. Easily add Google Analytics Tracking Code. Several Security and Advanced Options & Tools.