Your frustration is definitely part of the learning process. Michaelbe has good advice. The best thing to do is to relax, sit back. . .take your time with it. Don't try to force it, but just play with it.
Confused? Go deeper into your confusion. You might end up more confused at first, but it's well worth your time to ask more questions to yourself playfully, than to get frustrated. In a cloud of anger or irritation, you cannot learn or even use the PhotoReading Whole Mind System.
What you have to give up about your traditional way of thinking is a number of things. All of which, are mentioned early on in the PhotoReading book itself. And that, is that you must give up procrastination, negative attitudes, or even:"I don't think I can do this" statements inside your mind. You also have to give up mistrust toward your other than concious mind.