The books that I have are: 1. Examkrackers & 1001 2. Kaplan 3. PR 4. BR For each subject, which company should I use? I heard that Examkrackers is best for Bio and BR is best for physical science? Does anyone disagree? Which books should I use to study Orgo and Verbal? Any recommendations would be great! P.S. This is coming from someone with a weak base in the sciences. Thank you !