My wife and I really, really liked The Good Place. I also got us a copy of How To Be Perfect and thought it was a decent read. Not particularly EA, but very balanced to consider all the major western schools of moral philosophy and give each a fair hearing. I do think it was a bit lacking in covering eastern schools of thought like the role-based ethics of Confucius, but I understand it was targeted towards an english speaking audience.

As a primer on ethics, it's very approachable, but I do think it simplifies some things, and feels ever so slightly biased against consequentialism towards something like virtue ethics, but I'll admit, I'm pro-Utilitarianism, and might myself be biased in the other direction.

From an EA perspective, it may not be the best introduction to us, as I believe there's mention of EA, but it's mostly the view that Peter Singer and his arguments are very demanding and perhaps unreasonably so, albeit, it's a logical and important nudge towards caring and doing more (he hedges a lot in the book).

At the end of the day, the book shies away from deciding which moral theory is more correct, and as such is kinda wishy-washy, choose your own morality from a menu of possibilities, which somewhat disappointed me (but I also understand picking sides would be controversial). I'd still recommend the book to someone relatively unfamiliar with morality and ethics because it is a much friendlier introduction than say a moral philosophy textbook would be.

I've heard positive things about how to be perfect from friends. Schur wrote the foreword to the life you can save, but the way he used the most good you can do in the good place was pretty annoying. The character apparently inspired by it lives in the woods off grid drinking rainwater doing the least good you can do. 

Anyway, I think that justice by michael sandel is a brilliant introduction to ethics (I studied ethics in my philosophy undergrad). It's focused on many real-world applied cases to explore principles, arguments, theories, thinkers, etc. The thesis of the book is that we cannot avoid engaging in value theory when discussing real world dilemmas or politics, but this engagement can be done well or poorly.