1. With the mouse:
To rotate the model:
Click on the 3d model with the left button. Drag the mouse to rotate
the model in the direction you want.
To zoom in and out of the model:
Click on the model with the middle button. Drag the mouse into the screen
to push the model further and towards you to bring the model closer.
To move the model sideways:
Click and hold on the model with the right button. As you drag the mouse,
the model should follow you and rest wherever you release the right