I'm currently taking a manhattangmat prep class. My experience with the class has been good so far and I have improved my % of SC questions being correct from 25% to around 50% correct. However, after reading the modifiers chapter today I feel the lack of applying the concepts to the questions. Have heard of practicing more, but without applying the concepts, it seems futile. Any books/resource(s) that you all can recommend would be appreciated. Thanks.