Good to know that you are in DIMC, you can help these foreign students who really want to get into the medical colleges in Karachi. Your grades in the medical college would not be going to have any impact on your residency application overall, they have steps exams to judge your knowledge. So dont worry about getting high grades but try to make concepts which will make a strong base for you not only in the steps preparation but throughout your career. And stop reading chooti books!unless you really need them to clear your exams.