If you've used other Autodesk software, you have most likely used the ViewCube at some point. This widget sits in the upper-right corner of the viewer window and provides feedback and control over the orientation of the 3D scene.
With the ViewCube displayed, shift the view using following methods:
Freeform orbit: Drag any part of the ViewCube.
Rotate 90 degrees: Click an edge or corner of the ViewCube.
View an adjacent face: Click one of the triangles displayed near the edges of the ViewCube.
Roll a face view: Click one of the roll arrows displayed above and to the right of the ViewCube.
Reorient the point cloud to the Home view:
The house icon (in the top left of the ViewCube area) appears when you hover over the ViewCube, and will reset your view to its default state.