Use questions to test yourself, but go beyond the surface material.
Do not wait until the weekend before an exam to start doing questions. The more exposure you have the better prepared you will be on exam day.
Write your own questions/vignettes along with the answers. This is the ultimate in knowledge acquisition and engagement. If you can write your own question along with answers, you will have a much better grasp of the material.
In addition to questions you get in class considering using free library resources. AccessMedicine provides CaseFiles and pre-written questions that can be used to test yourself. The e-books found on the Medical Student guide often contain content specific questions even if not clinically integrated.
Change the question and answers to get the most out of them. Know why the right answer is right, but also why the wrong answers are wrong. How can you change the question to make each of the wrong answers correct?
Spaced repetition is the most effective way to learn the material, and to be able to recall the material long after the test.
Spaced repetition means that, prior to test day you will have seen the same material multiple times, with concepts you don’t know as well coming up more often while concepts you know very well come up much less often.