So..I had pretty sloppy instructors for both Chem and Physics. I feel like I havne't learned much at all..on top of all that..I exempted out of intro bio. So, basically..I've slightly less than a year to relearn all these concepts (I did fairly well in most of my prereqs by the way..but as I said..I dind't learn much). How do you think i should study? Should I just get hold of TBR, EK, etc. and start studying now? Or can I wait and cram for 3 months during summer with princeton/kaplan course and practice tests?