.

[celerystalks]

.

[Radagast]

The Four Pillars of Investing is my favorite.

[GoHokies]

A Random Walk Down Wall Street - Burton Malkiel.  Focuses on index fund investing and provides a lot of studies on how active managers have failed to beat low cost passively managed funds over time. It's an easy read and I think this is the first book I would recommend to anyone just starting to get into investing.

The Intelligent Investor - Benjamin Graham.  This is a more technical book and harder to get through, but if you are finance geek or really are really into security analysis, I think this book would be great for you. It focuses more on "value investing" and ignoring the irrational exuberance the "Mr. Market" will go through at times. 

The Millionaire Next Door - Thomas Stanley.  Not sure if this is really an "investing" book, but just a really good all around personal finance and lifestyle book.  I read this coming out of college before discovering MMM and it played a big part in me saving a lot when I was young and had almost no expenses.

I've read a lot more books on finance/investing, but I think those 3 books had the largest and most lasting impact on me.

[hadabeardonce]

A Random Walk Down Wall Street - Burton Malkiel.  Focuses on index fund investing and provides a lot of studies on how active managers have failed to beat low cost passively managed funds over time. It's an easy read and I think this is the first book I would recommend to anyone just starting to get into investing.

+1

It's worth a spot on a bookshelf or in a glovebox.

[Penn42]

These are the three I've read.

Financial Fitness Forever - Paul Merriman

First financial book I read and it gave me a good basic understanding of many elements of the financial world.

The Little Book of Common Sense Investing - John Bogle

Just a run down of the numbers behind why index investing is the way to go.

The Simple Path To Wealth - JL Collins.  It's his blog in book form. 

[MustacheAndaHalf]

What are you looking for in the next investment book you read?

"A Random Walk Down Wall Street" is good material to start off, but if you already know about indexing and the historical data supporting it, it might not add much to what you know.

Larry Swedroe emphasizes the long-term performance of small-cap stocks and value stocks, also with historical data to back up his claims.  His book "The Only Guide to a Winning Investment Strategy You'll Ever Need" has a demonstration of building up a portfolio.  I use the Amazon link to remember the name, so here it is (but be wary of trusting links from random MMM posters):
https://www.amazon.com/Guide-Winning-Investment-Strategy-Youll/dp/0312339879

His book on factor investing is also interesting, if you've already read the above book.

[harvestbook]

Only tangential to investing, but Jason Zweig's "Your Money and Your Brain" reveals all the numerous cognitive biases at work when we spend, save, or make financial decisions. To me it is a foundation upon which to think about investing.

Paul Merriman has several free books on his site via PDF download. I'm halfway between a Merriman Man and a Boglehead with a strong Mustachian bent. Simple, cheap, and patient.

[appleshampooid]

My vote would be The Intelligent Asset Allocator by William Berstein.

https://www.amazon.com/Intelligent-Asset-Allocator-Portfolio-Maximize/dp/1260026647