Use the Select Features button to select features and then view their attribute values using the Attributes button.
The Clear All Selection button clears the selected features in all layers. To clear the selection of a particular layer, right-click it in the legend, click Clear, and point to Clear Selection.
How to select features:
Click a layer in the legend to make it active.
Click the Select Features button and click either Rectangle, Circle, Polygon, or Line.
Click and drag to create a shape for selecting features.
Click the Attributes button to see the values for the selected feature or features.
If multiple features were selected, they are listed in the left panel.
Click each feature to see its attributes.