Count users redirected from Facebook

I’m assuming you have a facebook business page and are hoping to track so you can measure the worth of paying them for views. If so you need to use the facebook tracking pixel and slap the script they give you into your header. https://www.facebook.com/business/a/facebook-pixel

Link to another website with the same url path

This can be achieved using WordPress Multisite Network. See this tutorial for same: http://www.wpbeginner.com/wp-tutorials/how-to-install-and-setup-wordpress-multisite-network/ Also, if you don’t want multisite, for some reason, you can create a sub-folder in WordPress root of existing and install a separate WordPress in it.

How to redirect 404s that generated for css&JS files?

Google crawlers just follow the HTML. If you intend on deleting CSS&JS files, search through all your themes&plugins that were using the files and either comment off or remove the line calling the CSS&JS files. Look for both wp_register_???() and wp_enqueue_???(). Examples for plugins: wp_enqueue_style(‘wp_css_name’, plugins_url( ‘/assets/css/style.css’ … )); wp_enqueue_script(‘wp_js_name’, plugins_url( ‘assets/js/script.js’ …)…); Example for … Read more