A training aid for monitoring and improving the orientation a golfer's hands while gripping the golf club as well as the golf club itself during the swing thereof, wherein the structure of the training aid is such as to allow it to be removably attached to the golf club and travel therewith during the swing without interfering with the normal path of the golf club during such swing. A base assembly comprises a housing removably connected to the club shaft and a reference assembly movably interconnected to the housing and positionable into an operative position. The reference assembly includes one or more legs disposable radially outward from the housing and into frontal alignment with a longitudinal axis of the golf club when in the operative position such that the one leg and/or an indicator structure thereon is readily observable as the club travels along the swing path.