Stuart Wilson
Learn PhotoReading, in particular activation, on a couple of books not relating to your studies. Textbooks make it difficult to see your progress as you are learning to PhotoReading.
PhotoReading your textbook as often as possible. Once you have successfully experience activation you will be able to work on your textbook. Chunk it down don't try to pull trigger words from the entire book. Work was single chapters as you progress through the book as needed. Remember too, that your classroom lectures are also a means of activation.
Your purpose doesn't work for me.
I set my purpose to be that I want to get all the detail from this book in order to pass my exam. Maybe this is too high level??
It fails, because it doesn't give you a way of measuring it should have what you need. What specifically, do you want to learn. I suggest creating a purpose for each chapter. Imagine how you would be using it in your future. Imagine yourself explaining the information to someone else. From there, form your purpose.
AlexK