A golf putting training device (10A) thai indicates the proper aim point on sloped putting surfaces such as golf course greens and compensates for the slope of the various putting surfaces. The device comprises a platform (12) supporting one or more spirit levels (16DL, 16CL. 16BL, 16A, 16BR, 16CR. 16DR). The device can be elevated upon the putting green surface to permit a golf ball to roll underneath the device when lhe ball is pulted towards the indicated aim point, or not elevated when aim points are referenced to the golf cup or hole.