Some things will be covered later in your education, I'm sure, but others may not ever be covered. I found Goljan's RR very helpful (in addition to his audio) and used it while going through pathology (basic sciences are the first 2 years at my program, with path going all of the 2nd year). I made sure that I knew the topics in Goljan's RR and then a week or so before the test I made sure I went through all of the class notes, etc. as my primary source to prepare for the test. You'll find what works for you may be very different then others. Best of luck.