The plugin allows you to use the Recmnd service (www.recmnd.com - automatic recommendations) with your WordPress blog without coding.
Complete tutorial: http://www.recmnd.com/news/recmnd-wordpress-plugin/
Basic installation steps
Extract the archive into wp-content/plugins/ inside your WordPress blog folder.
Access your WordPress Administration and go to the Plugins section to activate the Recmnd plugin.
Use the "Recmnd" link from the WP Admin -> Plugins section to open the Recmnd WP plugin configuration page.
Enter the API hostname, key and secret parameters as displayed in the "Settings - Account Details" section at your Recmnd account https://www.recmnd.com/account/profile/#account-details and confirm the configuration of the plugin by clicking on the "Initialize Recmnd" button.
The last step would be to add the Recmnd widget to your blog pages. By default, the plugin will insert the widget at your pages upon activation. The recommendations will be shown directly below the body of your posts.
If you want to the have the widget placed at another position at your pages, you can do this easily via the Theme Editor section in your WP Admin (Appearance -> Editor). You need to select the "Single Post" (single.php) template file for your blog theme, and insert the following code snippet in the exact place where you want your recommendations to appear (probably you would like to have the widget displayed right underneath the text of the blog post):
<!-- Start recmnd --> <? php recmnd_body() ?> <!-- End recmnd -->