@ablerism I would definitely recommend Reasons and Persons. I struggled with it for three months last year (exactly the right way to engage with an important philosophical work!).

The first part of the book deals with ethics: the competing demands of self-interest, consequentialism, the needs of others, and their effects over time.

The part of the book that deals with the notion of a person and what it constitutes is the most mind-blowing - especially when dealing with what happens to consciousness when going through a transporter, Star Trek style, or doing split-brain experiments. i LOVE talking about this part of the book but I won't bore you here.