This is where I started:
https://www.amazon.com/Intelligent-Asset-Allocator-Portfolio...It should resonate with the HN crowd as it starts from the basics and builds up a strategy. Very understandable. It then uses that to help you build an overall investment strategy.
Bernstein is in line with the Boglehead investing theory. Own the market, don't try and beat it.
It has served me very well.