It's time for me to start studying for those dastardly standardized exams and I had a couple of questions. 1) Scoring: Does the GRE take away points for wrong answers? 2) When should I take it: I was told that most students take it April of their junior year and a second time October of their senior year. If I won't have enough time to study by April (summer is almost over), is it best to just take it once in October? 3) Review material: My college enjoys using archaic and obtuse textbooks, which are very indepth but seemingly useless in studying for the GRE. Right now I'm using Feynman's Lectures to study, but I realized that the material covered in the GRE and in Feynman is dissimilar. Any reccomendations for a textbook that covers physics on the level of the GRE?