I have numerous books on craft, including some of the ones that Cathy mentions in Rock Your Plot. The beauty of Rock Your Plot is how beautifully Cathy distills all the information in an easy to read format. Throughout the chapters, she has questions that get you thinking, and once you do the assignments you have a good idea of how to shape the various components of your plot. Rock Your Plot isn't a long book, you can read it in a two hour session at most and start right away with the assignments. Read it, keep it near you, and start plotting!