I like to set my brace height first then the nock height. Get the brace height where the bow is quietest, and with the least amount of vibration. Once this is done I pick the correct spine arrows, and begin to tune my bow to shoot center target. You should have already had arrows picked out before this point.
I don't worry much about nock left or right as I do point of impact. To me point of impact is most important. Hope this helps........
It's also a good idea to have some arrows weaker and stiffer in spine than the correct arrow from the chart you use, and several different weight tips as well. Once done jot all your measurments down for future referance......
Mike