1. First you want to just practice super reading and dipping even if you don't think you have any comprehension, you might also need to slow down in this part a bit. Don't flip the page every second when activating, you need to try to consciously absorb as much as possible. If you are reading a very important book, you might want to go straight to Rapid Reading and MM, or combine all the methods of activation.
2. You want to try to see the entire 2 pages, I do it in a soft gaze, I personally don't like the blip yet, although my tastes will probably change. I use a soft gaze looking at the four corners. This is hard, and requires practice to keep you attention on the corners, as I still find myself wanting to refocus, or center my attention somewhere else, just takes practice.
3. I would imagine the way the course is taught that you will mentally photograph the whole text book, no matter how big it is. Look ahead where you are sitting now, subconsciously you are aware of your peripheral vision, and you have a 180 degree view, shouldn't therefore a Textbook, although larger than other books, still be very small in the area that we can actually see? I am about to go to college myself, leaving in a week, so I can relate. Personally I'll tell you what I'm going to do. First thing when I get my books I'm going to Preview and PhotoRead. Then when I am in class I will use that for some activation, and after a couple days, when I see what sections of the book are going to be taught, then I will manually activate those for further retention, and MM then. There again, my skills and methods will advance throughout the year so that might change.
4. I am not sure about the formulas, I can tell you for sure though, that if you PhotoRead formulas and like technical information, then it would be impossible for you to be worse off if you didn't. Do it for the heck of it, you never know how it may pay off, and if there aren't any immediate results, don't worry, when I started playing basketball, I couldn't even make it to the rim I was so young, but as I developed my skills, I can shoot confidently and effectively.