WordPress.org

Unzip into your /wp-content/plugins/ directory. If you're uploading it make sure to upload the top-level folder. Don't just upload all the php files and put them in /wp-content/plugins/.

• Activate the the plugin through the 'Plugins' menu in WordPress

• If you wish to use Akismet filtering, make sure the Akismet plugin that comes with Wordpress is activated and configured with your Wordpress API Key.