Not sure if this will help with your shifting question but something to keep in mind...if you move the chain (front or back) closer to the bike frame (inside) you will move to an easier gear. Shifting the chain away from the frame or to the outside will put you in a harder gear. Yes, there are times when the gearing is close or overlaps that this isn't necessarily true...but generally speaking this is the case most of the time. Hope that helps.
As we must account for every idle word, so must we account for every idle silence." ~Benjamin Franklin