After having practiced daily photoreading for several months, I have come up with a system for textbook photoreading that works for me.
I personally wouldn't suggest diving right into textbook photoreading unless you've got at least 4 to 6 months of easy books that you've photoread on a daily basis under your belt.
Textbook photoreading is for the advanced practioner, in my opinion.
So here are the steps
First and foremost state your purpose. This is beyond just passing and making a good grade in your class. What's your ultimate higher purpose? How do you intent to implement this class on a practical level?
1. Ideally, the more time you have to prepare the better. If you are in college or university, and you want to prepare for a difficult subject next quarter, then you've got about 3 months to prep for it. Rushed, last minute studying is never a good idea. Photoreading is all about relaxing into the flow.
2. Do all photoreading steps as outlined by Paul Scheele on your text book for the duration of the class. Do this 3 times a day. You can photoread the book 3 times over in one sitting or photoread it at various times during the day.
3. Section the book according to chapters. If you have the class syllabus along with quiz/test questions then photoread them too. If not, most text books have review questions. Don't be afraid to have fun with this and imagine yourself as your instructor. See the image of your instructor crystal clearly in your mind, and then step into that image. What questions would he or she include on your assignments and tests? Think about how you will practically implement the information in this class at your job. What would your boss or clients need? Write the questions out, work through them, think about them as you photoread, review, scan, super read, dip, etc.
4. Try to photoread all assignments that you've done in the past and are going to do in the class at least once before bedtime. Give yourself the command to dream up the answers before sleeping. Photoread your text book as well before sleeping.
5. Look up reference sources and books in the bibliography. let your intuition guide you as to the ones that will be most helpful to you in your purpose.
www.worldcat.org is your friend.
6. In the US, there are all kinds of helpful study guides like the "Dummies" series and the "Idiot's Guide". They cut the fluff and fat and distill the key points to remember about any subject. Good idea to photoread a couple of those too.
The bottom line is consistency and reptition. The more you photoread your textbook the more familiar and easier things will get.
Take the book, thumb through it randomly for a few minutes, and put it under your pillow and sleep on it every night for a couple of weeks after photoreading it at night. I know it sounds strange, but try it if you dare.
Books are like people, the more time you spend with them, the more you get to know what's inside.
Good luck.
P.S. feel free to improve on this system and give some feedback on your results.
