After having PR'ed the book and letting it rest for a day or at the least 20 minutes for out minds to process. We go back to our trigger words and use activation techniques of superreading and dipping. This is the fastest and most reliable for getting the information out of the book.
Form a question in your mind and allow yourself to be drawn to the pages of the book that help to clarify the questions, doing that for about 20 minutes then we write/draw onto mindmaps the information we gathered. We keep building from there. The thing is we often know the answers but have difficulty in being consciously aware of them when we want to. So superreading and dipping is a fast forward tool for the mind.
To make sure your activation is successful make sure you write down the trigger words during the preview stage. These help your conscious mind know what you are photoreadng for and when it comes to activation you'll have good questions to find the answers for.
Re theta state, to be perfectly blunt. As a beginning photoreader you do not want to be in that state in relation to photoreading. Theta is associated with inspiration, intuition etc. Most people are unable to remember the stuff they learnt while in that level of awareness... initally. It can be learnt, meditation is a good way to learn. The only true way to know is through biofeedback. Suffice to say if you are well and truely relaxed probably have some theta waves kicking in.
If you follow the proceedure of counting down to enter the accelerative learning state you'll find yourself functioning at the optimum level for photoreading. Another technique you might like to try is counting down from 10 to 1 imagine yourself going down in an elevator, sitting in a comfy chair watching the numbers on the elevator screen and hearing the voice say the number and word relax for each number as you count down. See it, hear it and feel it as best you can, know that you are entering a deeper level of mind. I don't know if you'll achieve theta but I can assure you that you will reach your optimal accelerated learning state the first time you try it.
It doesn't matter what brainwaves you produce when you photoread as long as you are able to relax you have achieved *your* personal best learning state. Trust that it gets even better with experience.
Alex