I don't think there's a lot to offer. You spent your entire primary and secondary education plus college developing your academic skills, which have obviously paid off in being admitted to med school. Almost anyone who is admitted to med school is capable of doing well. The keys are discipline, critical thinking, integration, and social skills. Plenty of people will say that memorization is the most important but I completely disagree.
Things like reading research papers etc. are often cited but not really that important. Your job as a med student (especially pre-clinical) is mostly to learn the canon, i.e. what is already known, and less about what is on the cutting edge. Uptodate gives you all the most important stuff with links to the primary literature.