I was like Shelbie and everytime I learned a bit about PPing, it made no sense to me at all.
Alas! there was something I wanted to do that "made" me give it another try.
There's some good basic instructions on QuiltersCache.com ... and that's exactly how I got started and then just continued on.
Initially, I wasn't anymore impressed or thrilled, and then the more I did it, the more I liked it.
The precision results were enough to make me want to keep at it ... and man-oh-man ... the results are well worth the persistance.
You'll find there's a lot of how to variations out there. The more you do it, the more you'll get your own style figured out taking a bit from each person as to how to do it.
After you get started ... you'll be hooked ... and after that it's a matter of time and you'll feel right at home doing PPing!