Hi, I bought the book a while ago, and couldn't do it, although weird things happened, but now I've got the course, I need some help.
Here are my questions:

1- Last time I tried, I didn't understand the photofocus, when I do it should everything be blurry?
2- My real interest on it is to photoread physics and math books, lots of it, not for tests, but because I loved them, I think that would help me since they aren't a charged or need them for an exam, but when should I begin to photoread them? After how many succesfull normal books that I photoread?
3- Can I do the course in various days?
4- If I photoread a book, and then I will take a course on that in which I will get a grade, should I read it again?

Thank you and waiting for your help!