A golf system for training a golf player includes a golf putter designed to train the user in practicing an unconventional motion and a grid for guiding the motion of the golf putter. The golf putter includes a club head and a plurality of marking instruments such as styluses for marking the trajectory of the putter. The grid includes an enclosure, a recording device to record the trajectory of the golf putter, a plurality of guiding rails and an optional leveling device as well as an optional aiming device, thereby allowing the user to analyze his/her putting trajectory.