Using a multi colored pen has helped me mark important information and add my personal context. For example, during meetings or brainstorming I'll mark up information using different colors (red- to do, green- new idea, pencil- plain, sequential notes). I found a good one that has all the colors I need and a mechanical pencil [1]. There is overhead of thinking which color to use, but the value of having the context later is much more.
1. https://www.amazon.com/Zebra-Clip-Multi-Functional-Barrel-B4...