Hmmm, in that case, i wont confuse you or pass you a worng information that i dont have!
I did not come across any link or e-book during my prep for evals.
It was more of a spontaneous activity for me.
When i got the case study, read it thoroughly and then focused on the question they asked.. and answered it accordingly.
But its good to see that you are pro-active and want to catch the exact grip of this,
I can suggest you a guy who can really put u through this.. Franxan. His puy id is fstanley. And he`s a PMM admit.
btw, if i come across any such info reg CS, i`ll let u know
tc & all the best
Prashant