You can access some of the useful, predefined dashboards from the Dashboards home page.

To access these dashboards, from the left menu, click Visualize > Dashboards. From the Dashboards panel, click Home.

The dashboards are categorized as follows: Availability, Configuration, Inventory, Performance, Capacity, and Cost. To easily access some of the useful, predefined dashboards under these categories, click on the drop-down button against the selected category and click on the specific dashboard.