Has anyone else bought the AK3D - 3D car modeling with rhinoceros book/pdf?

Although it is a great tutorial, I find myself constantly getting stuck because either the next step isnt explained well enough or the correct words arent used in the translation. Or, I find myself using tools i am unfamiliar with such as the curvature graph which he uses to correct the flow of curves.

If anyone has done or is working on this tutorial and would be able to talk and help me out I would greatly appreciate it.

thanks!