With this video from Google, you’ll learn how to use the Search Queries feature in Google Webmaster Tools to make improvements to your site. There is an ongoing debate within the SEO sphere if the data from Google Webmaster Tools is somewhat to consider or very, very off. My best advice is to actually test it yourself.
Finding new Search Queries to target with your content and pages can be done with Google Keyword Planner, part of the Google AdWords suite, but also with third-party solutions such as Semrush.
Starting with your SEO analysis requires a good set of data to pick your insights and findings from. Try the Semrush database below to get started.