How to setup Yoast SEO Title Tag in Wordpress
To setup your WordPress Title Tags to use the Yoast Plugin, you need to do a small customization.
Once you have installed your WordPress SEO Plugin.
Go to “Editor” under the Appearances Tab
Click on header.php link from the files that are shown.
Search for the <title> tag in the file, and replace the whole tag with : <title><?php wp_title(”); ?></title>
Click on Save.
Thats all you need to do, once you have done this, what you enter in the Title Filed of WordPress SEO By Toast box when adding content to your site, the Title tag will reflect onto the user side.