Recommended
Pretest itself is a pretty useful study aide for the shelf exams, in my opinion. I think family med pretest is written better and more pertinent than the NMS book. The app is pretty good as well. It keeps nice statistics and has an easy to use interface. $30 is the book price, and I choose the app over that because the quizzes can randomize the questions from various topics, simulating the actual exam, rather than doing one topic at a time.
InGine about
PreTest Self Assessment and Review: Pediatrics, Medicine, Psychiatry, Surgery, Neurology, Family Medicine, Emergency Medicine, Obstetrics & Gynecology, Biochemistry & Genetics, Pharmacology, Neuroscience, and Physical Diagnosis