[0] http://www.amazon.com/The-Intelligent-Asset-Allocator-Portfo...
The book is actually a quick read even if you're not a math whiz (which I'll assume you are). It goes through a review of how to allocate your money across a number of investments and explain why it makes sense not only from a theoretical perspective but also based on historical returns in the stock market.
You can also pick up other books by William Bernstein that cover the same thing in different degrees of detail.
[1] http://www.amazon.com/The-Intelligent-Asset-Allocator-Portfo...
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.