I have about 3 weeks left. I'll be done USMLE world in a week. So I will have two weeks left to do something. The way I have been studying is that I just did questions and for each question I would refer to first aid and read the relevant section. I never sat down and read through first aid chapter by chapter (except for micro and pharm). My dilemma is that I really can't decide on whether to study first aid chapter by chapter or go through USMLE world questions for the second time during my remaining two weeks! Thanks for your suggestions.