You will realize great savings in strokes. Learning how to read greens correctly through plumb bobbing. Some claim that the plumb bob cannot be applied to reading greens. I have applied the physics and mathematics of a sloped putt to come up with a fairly simple method of plumb bobbing effectively. It has been well established that most putts are greatly under-read, even by professionals.
Most players find elevation changes difficult to club correctly.
I have worked out the physics and mathematics to determine how many more or less yards the shot plays with an elevation change, no matter how great. You will begin to hit the right clubs for each shot and be more confident with your club selection. Another guessing game with club selection is the effect of the wind. I can provide you with a very simple method to determine the wind speed and then determine how much longer or shorter the shot will be due to the wind. No special equipment needed.