Hi guys, really trying to rework my game. Looking at building ranges for 6 max cash and am having trouble figuring out how to correctly get my ranges. I have read Ed Miller's book Poker's 1% and have watched a fair amount of videos but when it comes to putting pen to paper and actually doing the work, I am hitting a wall. I am also using Pokercruncher for calculations.

Should I just be using other peoples work to fill in the blanks or should I be doing something else? For example when deciding what hands to defend from BB to a single raise how would I go about starting?