Depends on the book. For really dense fiction it's to theory-craft/make sense of the world and characters/allegiances within it.
For non-fiction it's usually questions to explore later/see if they are answered as my knowledge grows.
It can also be fun on re-reads to see where my headspace was at the time. I've been doing this for probably 8ish years now so it can be fun to look back and see how I've grown.
I've also jailbroken my kindle so adding additional dictionaries/lookup sources has been extremely beneficial.
Do you go back and read your notes later, or do they just help you process?
Depends on the book. For really dense fiction it's to theory-craft/make sense of the world and characters/allegiances within it.
For non-fiction it's usually questions to explore later/see if they are answered as my knowledge grows.
It can also be fun on re-reads to see where my headspace was at the time. I've been doing this for probably 8ish years now so it can be fun to look back and see how I've grown.
I've also jailbroken my kindle so adding additional dictionaries/lookup sources has been extremely beneficial.