I haven't gotten too far into studying the Aviation Instructor's Handbook and the Gleim FOI book, so I don't want to give the impression I'm throwing in the towel right after the bell rings. But....I have a feeling a lot of this stuff just isn't going to "click" by sitting here staring at books. I can memorize performance figures all day, but this stuff just doesn't seem to be sticking. Can anybody recommend a good study course, be it software, books, DVDs, etc, that really dumbs down the CFI and FOI material? I'm not above watching John and Martha if someone recommends them.