During my Bachelor and Master in Electrical Engineering at Politecnico di Milano I was known, among others, for taking excellent notes during class. My method consisted in creating a super summary of the course which was basically a single document condensing class notes, info found on the Internet and my own thoughts. That document was then my only source of study material to prepare for the final exam. It worked wonders for me and, I must admit, it still works pretty well for when I need to refresh my mind on something I studied in school.
I thought sharing these summaries can help others learn electronics/photonics, assuming you can speak Italian and can understand my handwriting.