The same spot as where you were taken for the lesson would be a good start, they must have felt that there may be some gold in the area to give it a try, from my time looking around the Maryborough area most of the areas are accessible by normal sedan and then walking will get you into some good areas, any gold will be where you find it and no one is going to give an exact location, we have found it in some places where others have not looked as it was still there, but it is not there now as we are keeping it warm at home, it is up to you as to how much effort you want to put in, we have done well along the Chadwick Track, it is not too far out of town and is suitable for normal car, it is a long track and is a matter of trying different places until you are able to walk over some gold. Good luck.
Graham