Drag the mouse to rotate the model around the X and Y axis
Press SHIFT while you drag the mouse to rotate the model around the Z axis
Use the scroll wheel to zoom in and out
Press ALT while you drag the mouse to move the model around
Drag the mouse on the light source box to change light direction
Click on any of the checkboxes or move the sliders to change the rendering settings
You can load any model and/or texture uploading one from your own computer by clicking the corresponding button at the bottom of the page