While Aaronson's book is excellent, I suspect that someone who had trouble following Eliezer's posts will also have trouble following Aaronson's discussion of QM. It's not very neophyte-friendly.
Yeah, it requires effort, but, unlike Susskind's book, it has basically no calculus, just algebra and a tiny bit of some basic matrix addition and multiplication, as well as some very brief understanding of complex numbers, both of which can be learned in an afternoon by a person who has a solid grasp of precalc (grade 11-level math or so). Basically the same prereqs as for the QM sequence. Additionally, it touches on several very AGI-relevant points, like Godel incompleteness, anthropics, complexity and free will. And, while it talks favorably about MWI, it has none of the anti-rational MWI/Bayes propaganda and "eld science" bashing of the QM sequence.
You know the drill - If it's worth saying, but not worth its own post (even in Discussion), then it goes here.