This question has most likely been asked and answered before, but I was not able to find it. Has anyone found it successful (enough) to replace, for the most part, professors' instructional content i.e. powerpoint slides or lectures notes with Kaplan Step 1 Lectures Notes and its accompanying video lectures? I know when it comes time to prepare for Step 1, it will be super advantageous, but not sure if it is sufficient for passing exams.