Offset is the distance the mounting face of the wheel is fromthe wheel hub. It is a lateral measurement, nothing to do with the way the wheel points, with is toe in or toe out.

The easy way to remember this is that modern cars have a postive offset - the face of the wheel is right at the edge of the car width, while old style wheels - think of the mk 2 Ford Escort - often have negative offset; the face of the wheel is closer to the inner side (the shock absorber side) of the car.

So the bigger the positive offset the more the face of the wheel will be out towards the outside of the car - as above this is done on most modern cars because they are fwd and it helps to keep down torque steer and tramlining.

Camber is different to offset and toe in, that is the angle of the wheel to the vertical (if you look at F1 car front wheels they have negative camber - cars like the old Beetle and Imp had positive rear camber).

So it is unclear what you are asking below....