I read most of my pump manual before I began pumping. I also read the first half of Pumping Insulin by John Walsh, and in the past had read Think Like a Pancreas by Gary Scheiner. So, I had a very good grasp of concepts like basal, bolus, extended bolus, and so on before I began pumping.
Also, for the year before I got a pump I kept a logbook of everything and reviewed it on a daily and weekly basis. Keeping detailed logs is useless if you don’t sit down and review them regularly, looking over what you’ve done in the past and what’s worked and what hasn’t. I review them by comparing day to day and week to week to see whether I’m improving or not and, if not, what areas I need to work on.