Hey folks...so I failed my 7 about a month ago using Kaplan. I went to the 4 day course and did quizzes for about 2 weeks nd still failed with a 67. My employer got me the tests for STC and I've been failing them miserably. I was thinking of buying the series 7 for dummies book for a quick read as a refresher. Anyone have it or used it? It's pretty cheap on amazon and I was just wondering if its worth it or just use the materials I have?