I would say Jeff Hartman's book is lacking in a lot of areas. I don't find the information organized as well as I thought it should, but the book does have it's strong points. I find that the "tuning" stories in the later areas of the book are all fine and dandy, but I seriously would not know where to start in terms of tuning if I just read that book.
I KNOW there is never a step-by-step for even tuning 2 or 200 of the same engines,cars, etc... but It IS lacking in that respect. There is no "scheduled" approach for tuning based on adjusting timing, adjusting fuel, target afr's (yes I know there is a rich/lean target chart somewhere in the book) and when to do what as a general starting point... something a TUNING book should have, if you ask me.
It's a good starting point, but if you know what a distributor, knock sensor, oxygen sensor, coolant temperature sensor, and air flow/pressure meter does, and how it correlates with the sum of all the sensors readings, then I doubt you'll learn much.
That's just what I came away with from the book. Still wondering when I get my EMS installed... where do I go, short of running a base map?