Start with PPT files and make sure to home in one what's the most important. Hint: many clinicians will give of a list of important signs/symptoms of a particular disease. However, all it is, is a list. They don't tell you that perhaps the first four things are seen in > 75% of all patients, and so when you see, nausea, vomiting, dehydration + X, Y and Z in a 2 year, you automatically know the Dx is ___ and not ___. So pump your clinical faculty to get them to weed out the minutiae,
Required reading should only be done if
a) you have time
b) you're really interested in the subject
c) there's a conflict on the subject between two different lecturers, or the lecturer's presentation and the notes
d) the lecturer's notes are unclear
First Aid for USMLE should be the bare bone minimum of what you need to know. My worst students attempt to use only Board review material as their learned, and it simply blows up in their faces.
In OMSI most students show up for lecture. By spring of OMS II, about 20%. I don't have a problem with that because they're adults and they have to choose the learning style that's best for them. We, like many other schools, videotape our lectures, so the students can study at their own pace.
There are multiple ways to study, and no one right way. You have to find what works for you. I'm a fan of drawing pathways out on art paper over and over Worked for me when I took biochem. For Histology, I made drawing of my slides.