Eddie Campbell, the artist of the original comic, FROM HELL, takes us on a chapter-by-chapter analysis of the creation of the comic by presenting commentary, art, and long excerpts from Alan Moore's legendary scripts. This book is "script-heavy," which is a good thing. We get to see Moore's descriptions for most all of the key scenes from the book, and we often get Campbell's explanations for why he sometimes chose to depict things differently. One of the ongoing pleasures lies in seeing Moore occasionally call for emotional or dramatic images only to be replaced by Campbell's more restrained, matter-of-fact style. The contrast is fascinating, and by the end you get a good sense of Campbell's artistic philosophy.
Honestly, for anyone with a serious interest in FROM HELL, this should be your first supplemental purchase.
I will add, for what it's worth, that I ordered the Kindle for Mac version. There are many illustrations in the book, but I was not able to enlarge them to a readable size. (I'm not sure if it's possible to do so or not.) However, I simply read it with my original hard copy of FROM HELL nearby and enjoyed it immensely.
[I should add that I finally was able to try the book on an iPad and the pictures enlarge to full size perfectly, so my problems with the Kindle for Mac version may just be my own ignorance.]