"11. Do you always have to apply all the steps ? Or can you photoread a book and still get something out of it, even if not much ?"
Hello Selador,
I attended two photoreading weekend sessions and have been photoreading for about seven years. I also often read in the old fashioned way.
In answer to your question above, you can get plenty from a book even if you don't apply all of the photoreading steps. The important thing is to play with it and notice your results.
I used it extensively throughout graduate school, often reading assignments hours before a test and doing well. My studies were computer related and technical -- not things you could easily guess at, so I'm convinced photoreading worked.
I also have used photoreading while playing Scrabble (big game coming up tomorrow!) and to quickly shop through crowded racks of clothing and zero in on something I really want. My advice -- play with photoreading, enjoy it and attend a class if you possibly can. Good luck with it.