These are all such great tips!

One thing I do is skip a line every time I make a note. So there's skipped lines everywhere. That way if I need to go back and add something, I have room, or can write extra thoughts while I'm reviewing later. And even if I don't add anything, it's much easier on my brain to look at a line at a time, instead of one huge block of writing.

It was suggested to us by a professor my freshman year of college - he MADE us do it. I was annoyed, but it actually worked!

Another thing I like to do too is compare notes with someone else. I always try to make friends in my classes to do this - often, we'll both have something the other doesn't, or a different way of taking notes, or a different way of understanding things, so it's really helpful to compare notes. Like for a class this semester, I have a friend who took it a semester ago, and she gave me her notes - so I always compare when I'm studying for the exams.