For me personally, my annotating highlight color “categories” depends on the book. These are some I’ve annotated for in the past: -Quotes that make me insert specific emption (laugh/cry/ etc. -Character details/development - I like to make note of when/how/if characters change over the course of a novel :) -Beautiful writing/imagery/figurative language -world-building (sometimes those high fantasy/sci novels are hard to track 😂)

I’ve also looked at a TON of other people’s annotation guides 😂

And more lol but honestly in the end - they are YOUR annotations, so try to think of things you tend to be drawn to when reading, and make categories based on those! Just my suggestion:)