WordPress.org

1. unzip plugin directory into the '/wp-content/plugins/' directory
2. activate the plugin through the 'Plugins' menu in WordPress

First activation will create the 2 tables wp _ cpd _ counter and wp _ cpd _ counter _ useronline.

Configuration

See the Options Page and check the default values. It's easy. :)

If "Auto counter" is on reads on single-posts and pages will count without any changes on template.

For more informations see "Other Notes".