I know that it works for some people, but my personal feeling on it is that you shouldn't waste your time re-writing notes. It'd be one thing if you were summarizing the key points of Robbin's Pathology, but these are review books that you are talking about that supposedly already have the highlights written in a neat format. If something stands out to you in first aid (eg you keep forgetting what a particular word means in first aid, or there is a helpful mneumonic on a first aid topic), then by all means, write it in. But if you are talking about transfering every little bit of information that appears in those review books as testable step I topics into first aid (eg cramming the prevalence, pathology, mechanism of drugs of treatment, etc onto the sides of First Aid), then I would advise against that. To me, that would be a waste of time and energy. Those review books are made so that you should be able to read them very quickly and gather the important information on each page. Highlighting works for some people too, but I wouldn't advise highlighting the whole book either like some people tend to do.