...
A map is a project item used to display and work with geographic data in two dimensions. The first step to visualizing any data is creating a new map. The Ribbon runs horizontally across the top of the ArcGIS Pro interface. Tools (buttons) are organized into tabs along the Ribbon.
You will notice that a new Map View opens in the main section of ArcGIS Pro. The panel on the left side of ArcGIS Pro is called the Contents pane. After creating a new map, the Contents pane now displays the default Map title and automatically adds the Topographic basemap layer to the map. The panel on the right side of ArcGIS Pro is called the Catalog pane. After creating the first map, a new Maps section has been added to the top of the Project tab within the Catalog pane.
...