There is no pdf/book that explain step by step for Automagic scripting. I ever thought about creating ebook pdf, documenting various scripting technique I use in my flow. I have created so many scripting pattern, that sometimes I forgot how I did it and have to dig many flows just to see the examples.
I should started to document it now, for my own future reference too. But again, too many distraction. My ISP just give me trouble and I have to redesign all of my IP based flow to suit to the new network configuration for a month.