You want to go through the whole book once really,really fast. Then you want to go through the individual chapters and treat the individual chapters as a book itself.And yes by all means definitely do multiple passes on each chapter. It's like Dana Hanson says going from the whole and then breaking it down to parts and let me stress keeping going through the chapter many times on multiple passes.However this post is starting go remind me of a earlier post where someone was a beginning photoreader and they wanted to learn photoreading and a highly technical text at the same time and Alexk definitely did not think that was a good idea so Seto the ? becomes are you trying to learn how to photoread and activate at the same time and learn a technical text at the same time or do you already know photoreading and activation and you want to activate some technical books. Let us know so we can figure the best way to help you. sincerely,photoread4me.