I'd do the affirmations in my own language. They don't have to be the affirmations exactly as taught in the cause. The intent is important. So affirming that, I'm PhotoReading this book so that I can answer all the questions in the exam with ease. Is probably more powerful to the experience PhotoReader than, All that I PhotoRead will have the impact I desire.
Once you learned the system go ahead and work with textbooks. It's not a good place to start. But if you've experienced Superreading and dipping, skittering etc, then you're ready enough. Play with it. You know what experiences you're looking for with textbooks. Just don't start with textbooks relating to school work or formal learning until you've gained some experience with the system.
It's just no good learning on textbooks because they take more effort to read in the first place and the beginner won't make allowances for the fact that a 500 page (50 hour) textbook may take 2 or more hours of activation before you even feel like getting it. The more experienced PhotoReader will notice that they are getting something within the first 20 minutes. In this world of instant gratification, we want to see results straight away. That is easier to see on a book that would take the average reader about 8 to 12 hours. That's why we start with non-fiction books of about 200 pages. Do 3 or 4 of them and you're ready to play with books relating to school work.
A chapter is not unrealistic to activate. A 1000 page book is.
... In one sitting. You may not need the full 5 days on one chapter (about 2 hours)
BTW you don't need to do the 5 day test over 5 days. You can do it in one morning. The important thing to remember is to take those breaks that represent the day. Leave at least 5 minutes between day 1-2-3 At least 20 minutes between 3-4 and 5 minutes between 4-5 & 6 if you decide you need more. At that point I'd definitely consider giving it a much longer break say overnight.
Alex