Recentre your view
To return to the default workspace view:
Click on the arrow in the toolbar at the bottom of the Workspace screen.
This will launch a menu - click on "Recentre view".
Orient your view to North
To quickly orient your view to face North, just click the compass:
Top-Down view in 3D
To quickly switch to a top-down view in the 3D environment, just press the ‘t’ key on your keyboard.