I had to take a class to learn PP. The class served me well. I can go a year or more without doing it and it comes right back to me immediately. My knowledge in PP allowed me to teach myself the freezer paper method from a book that a previous poster mentioned, which is another great variation on the technique and allowed me to make mariner's compass blocks. I would not attempt MC, nor NYB nor any countless other blocks where precision is necessary without PP, be it the foundation PP method or the freezer paper method where you fold the paper back and sew next to it.
There is much to be said for a real live person in the flesh showing you how to do it and working through the mental blocks with you until it clicks. JCrow, I recommend you find a class in your area and take it. I think you will save yourself untold amounts of frustration by taking a class with a real live person who you can ask for assistance more than any book, dvd, you-tube video etc.
JMHO.