As a student, we all try and make revision notes that see plenty of use right before exams. However, I like to also revise these revision notes by making more focussed and condensed ones. I'm not quite sure how I do this (but once I figure it out, I'll share the process) but as a result, I have a few notebooks full of really random notes! I'm not sure how handy this all is for me but it seems to work. I'm quite an active student - reading alone does nothing for me - so making notes, rough or otherwise, seems to work well in aiding information retention.
During this note making process, I also use post-it notes and in fact, go through loads of them! They are handy for condensing little chunks of information, of which there are many in medicine.