To select any object in the drawing, hover your cursor over it and left-click. The object will be selected and blue rectangular dots, called multi-function grip, will show up. The selected object will also get highlighted:

To remove the object from your selection, simply press the Esc key on your keyboard. If the selection is active even after pressing the Esc key once, you can press the Esc key multiple times as well.

To select multiple objects, you can click on them one by one; you don't need to press and hold the Shift key to make multiple selections. If you want to remove all the objects from your selection, you can press the Esc key, but if you only want to remove selected objects from your selection, then press and hold the Shift key and then click on the objects you want to remove from the selection. Using this method, you will be able to keep the complete selection and only selected objects will be removed from the selected group.

To pan the complete drawing in the drawing area, press and hold your middle mouse wheel so that the cursor changes into a hand icon, and then move your mouse. The complete drawing will pan in the drawing area and it will follow the movement of the mouse:

You can also select the pan tool from the navigation bar and then use left-click to pan the drawing. 

Just like selecting and panning, zooming is also pretty easy and there are many ways we can zoom our drawing area. We will discuss this in the next section.