Seto,
When you are photoreading a textbook even though you are only concentrating on one particular chapter you should be photoreading at the very least 3 better 5 chapters.
You include photoreading the 2 chapters before and the 2 chapters after the one that you are concentrating on. This is to ensure that you are in correct state while photoreading the important chapters and that way you only need to do it once.
The best way to handle a textbook is to photoread the whole book once at some point. then work on the chapters along with the class. Photoreading 5 chapters as decribed.
You state your purpose enter the state of mind apply the tangerine before you preview. This ensures your mind is focused on the preview and you can do it in a couple of minutes rather than ten. 
You then enter the acclerated learning state. Here you affirm your purpose and going into photoreading. Do a short postview to help formulate questions and give it a break. Let class be the activation session or come back later to activate your call. However while learning the photoreading system I'd be inclined to do some activation before the class... just got get the hand of the system.
If you're unsure what you should be doing at each stage of the system go back to the mind map on page 66 of the book.
You can also apply the tangerine when you enter the accelerative learning state. Keeping your focus on the back of your head while you saying the chant.
Alex
