The first thing that I like to do after taking a lot of notes is to go back through each note one by one and see if I can apply it to an existing problem or pap

The first thing that I like to do after taking a lot of notes is to go back through each note one by one and see if I can apply it to an existing problem or paper that I am currently working on. It allows me to reframe my existing problems using what might be a completely unorthodox perspective and may even be at least on the surface totally unrelated. But ultimately what you do with the notes is highly dependent on what your goals are. If your intent is just to be able to increase your existing body of knowledge then it may be worth looking into some kind of SRS flashcards system for the most salient points. For somebody with a greater desire for application purposes then they might apply the strategy that I mentioned earlier.