OR, get a online ruler that overlays, go to practice mode, get on a green with a 10ft putt, look at the grid dots speed, putt directly at the hole, then measure the distance you missed by...
then use a mulligan, apply that measurement to the next putt and see if it goes, if not add that distance too...once it goes, then use another mulligan change the aim and hit it softer and harder until it goes everytime...
then set up another putt from a different angle, different break, etc. and do it again...
if you read putts so poorly you have to resort to this, after a couple hours you will still be a cr@ppy putter BUT, you will at least have a clue/benchmark imprinted in your brain as to about how much that putt or a similar putt will break, and that's when Teks system becomes a useful tool.....
then the hard part starts....