New stuff to learn

Right decided I prob won't play again today. Going to learn some charts instead yawn. Basically I want to know within which percentile each hand lies. eg T8s is in the top 20%, 97s is in top 30% etc. It would take a while to explain why I want to know this off by heart... It has to do with putting opponents on hand ranges and then knowing if our hand is good enough to shove/call. The simple explanation is that it will make short stack decisions much easier. Once I've achieved this - it may take a week or two since my memory is as much use as a chocolate teapot - I'm going to spend some time with the SNGWiz hand quiz and see if I can improve my average score which currently lies between 80% and 90% which is obv not good enough.