Print out an adjacency map. Take a highlighter and mark what #'s all of the endcaps are. (F1 D49)The numbers are super tiny so this makes a really quick reference for you. When you get the POG, look on your map and see where it goes (mapping) You may have a few permanent end caps that really never change, They will need to be retied every few months. When you get the "reties", print new labels, clean the endcap and put the new labels in (some people don't do this because nothing changes, you still need to do it!) I found printing the map out to be very helpful when I was learning