it depends wat green speed u are playing on
Distance Control
Soft Greens- 1:1.0 ratio - 10 ft putt will go 10 feet, 13 ft putt will go 13 ft
Average Greens - 1:1.1 ratio - 10 ft putt will go 11 feet, 13 ft putt will go 14.3 feet
Fast greens - 1:1.2 ratio - 10 ft putt will go 12 feet, 13 ft putt will go 15.6 ft
very fast greens - 1:1.3 ratio - 10 ft putt will go 13 feet, 13 ft putt will go 16.9 feet
once you have figured that out you need to check elevation
for every inch uphill or downhill it is you aim a foot longer or shorter
for example on soft greens say u have a 10 ft putt and it's 2 inches uphill u need to aim 12 feet
now if say ur playing very fast greens and u have a 10 ft putt that is 4 inches downhill you compensate 4 the elevation so u subtract 4 feet then since ur on v fast greens u know a 10 ft putt will go 13 feet so u subtract 3 feet b/c if u hit it 10 feet it will go 13 feet Then since u subtracted 4 feet 4 elevation and 3 ft 4 green speed you subtract 7 ft so ur aiming 3 ft
let me know if I'm confusing u
now for break all I can say is read the break it Just takes practice