Looking to go back to basics on some math to improve my HU game, specifically how much we need to defend vs steals to be unexploitable, how to work this out. Also how often we need to defend vs 3Bs / 4Bs to not be exploited, and then how to make some ranges to do this. Kinda simple stuff but really wanna brush up on this atm since i am starting a ton of tables and don't wanna second guess myself. Any articles or video's to anything related to this would be appreciated, thanks in advance :)