These have been around a while, and there are actually a couple different versions, with different authors. I Had the scales and modes one way back when I was in high school, and I really have got to say that when I first got it, I would just go through and pick out a scale pattern and play through it, trying to get it under my fingers, so to speak. A bit later I actually read the thing and tried to follow the logic of it and, man, it was like someone pulled up the blinds and let the sun shine in! I finally started to understand how chords and scales all related to one another and to the wide world. I'm sure there are some nay-sayers out there, but that book there, at least the version that I had (actually I've still got it) is probably the single most important piece of my musical education. Don't worry too much though if everything doesn't immediately sink in, it's like making tea, you gotta let it steep for a while....