I picked up the Ephraums book on the basis of some of the recommendations on this thread. Very cool book. Very practical from the perspective of seeing how Mr. Ephraums approached these twenty prints. Don't know how long it would take, or whether I'm even able, to develop his pre-visualization abilities, but the book has definitely gotten me to thinking more about it.
. I believe the most frequent word in the book is also the shortest possible (I). And this rediculous obsession with sharpness... As if prettiness were the purpose of "fine-art".