FAQ/Turning
From PWI Wiki
How can I turn the camera?
The usual way to turn the camera is to hold the right mouse button and move the mouse around. (You can also zoom in and out with the mousewheel)
But there's an extra way. Go into the settings menu (click the nine squares, bottom left) and look for the confusingly named "AD keys" button.
Turn that on, and the A and D keys will no longer sidestep, but will instead rotate the camera. Perfect for laptop play.