Instructions
Press down the left mouse button to select something, such as an item, ability or target.
Press the right mouse button to perform an action. For example, to loot a corpse or open a door, you press the right mouse button.
Use the mouse scroll wheel to zoom the camera in and out. For example, if you wish to zoom out, you would scroll back on the mouse wheel.
Hold down both the left and mouse button to move. While you can still use the WSAD layout on the keyboard to move, you can also press down both the left and right mouse button to move in the direction you're facing.