tomd37 wrote:"All About Asset Allocation" (second edition) by Richard (Rick) Ferri.
"Common Sense on Mutual Funds" (Fully Updated 10th Anniversary Edition) by John Bogle
"The Random Walk Guide to Investing" by Burton G. Malkiel (not necessarily one of the most read, but one of my favorites)
I just started the Rick Ferri title you mention. So far it seems very well put together. To whatever extent a person can recommend a book he's only 25% through reading, I'd recommend it (if you're looking for a thorough treatment).
I also recommend Common Sense on Mutual Funds
(same edition). Bogle's approach to AA is very streamlined and so on the surface at odds with the more sophisticated academia-derived approaches. It's a good reminder that you really don't need an extravagant setup, plus it's got an immense amount of other information that's pertinent for mutual fund investors.
Don't do something. Just stand there!