How do I use Google Looker Studio?
The links below are good resources for Google Looker Studio.
You can access your site's raw info at analytics.google.com under Reports -> Engagement -> Pages and Screens.
Google should have sent you an email with a link to your dashboard, once it is created. If you are using the Ensemble global analytics, a filter has been created to limit the graphs and tables in the dashboard to just your site. New graphs and tables you add to the dashboard will need that filter added manually or they will display info for all sites in the CMS.