Register your site with Google Analytics to track and monitor your websites performance. This tool provides the site owner with valuable statistical data regarding engagement, traffic and behaviour of visitors to your site.
Once your website is live and running, the next step is to measure the effectiveness of your site. Google Webmaster Tools allows you to see where traffic is coming from and which pages are the most popular. It’s a free resource, you just need to set up a Google account first if you don’t already have one.
Yoast is a simple and effective website optimisation plugin designed to help you get your content in good shape / optimised for search.