Why can't I get the camera view like in the tutorial? In this tutorial: Create a Realistic City - Blender Tutorial

At 10:36 he presses CtrlAltNumpad 0

When I do the same I get nothing but an empty view.
Then he goes back to object mode and can play with the camera zoom in out.

I'm now in edit mode and everything selected.



And more or less I'm in same position as he is.

Now when I press CtrlAltNumpad 0 I get this:



Not even close to what he did.
The clipping distance for the camera is probably too short. With the Camera selected, go to the Camera tab and adjust the End parameter to something more appropriate for the scale of the scene.



After you've done that, you can play with the position, focal length, and sensor size to get the look you're going for.