I need help in making notes. Whenever I make some notes, the problem with my notes is that I don't revisit them because they seem to lack information on my fir

I need help in making notes. Whenever I make some notes, the problem with my notes is that I don't revisit them because they seem to lack information on my first read. So I go back to the source and read it again. Each time I do it, I get new insight. So everytime I see these note taking posts, I don't get the point of making notes. How often do you guys revisit your notes?