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Comprehensive Investing Education
By an Amazon.com customer
Rich Dad, Poor Dad: What the Rich Teach Their Kids About Money--That the Poor and Middle Class Do Not!Rich Dad, Poor Dad: What the Rich Teach Their Kids About Money--That the Poor and Middle Class Do Not! by Robert T. Kiyosaki
Buy new: $11.53 / Used from: $2.77
Excellent overview on investing mindset...don't look here (or the other books in the series) for useful nuts and bolts, however. See other selections below for that.
Safe Strategies for Financial FreedomSafe Strategies for Financial Freedom by Van K. Tharp
Buy new: $16.47 / Used from: $5.45
What "Rich Dad" should have also told you. Each chapter provides practical means of controling debt, risk management for stock investing, and real estate investing tips
The Millionaire Real Estate InvestorThe Millionaire Real Estate Investor by Gary Keller
Buy new: $14.93 / Used from: $5.98
Best fusion of "Rich Dad" mindset and practical next steps for getting started.
Getting Started in Options (Getting Started In.....)Getting Started in Options (Getting Started In.....) by Michael C. Thomsett
Buy new: $19.95 / Used from: $2.64
Decent primer for options use...however, McMillan's books are the real resource once you gain some understanding.
Options as a Strategic InvestmentOptions as a Strategic Investment by Lawrence G. McMillan
Buy new: $50.40 / Used from: $45.07
Not accessible for beginners, but it is the authoritative guide to options strategies.
The Warren Buffett Way, Second EditionThe Warren Buffett Way, Second Edition by Robert G. Hagstrom
Buy new: $16.47 / Used from: $10.73
GREAT book that attempts to spell out how Warren calculated the value of his notable investments. A must for the fundamental stock investor.
Hot Commodities : How Anyone Can Invest Profitably in the World's Best MarketHot Commodities : How Anyone Can Invest Profitably in the World's Best Market by Jim Rogers
Buy new: $17.13 / Used from: $2.20
His other books are entertaining reads. This one contains compelling insights on why commodities are (and will) outperform stocks over the next decade.
Charles Schwab's New Guide to Financial Independence Completely Revised and Updated : Practical Solutions for Busy PeopleCharles Schwab's New Guide to Financial Independence Completely Revised and Updated : Practical Solutions for Busy People by Charles Schwab
Buy new: $10.36 / Used from: $0.01
A very accessible overview of the investing basics most people should know. 
Investing in Real Estate, Fourth EditionInvesting in Real Estate, Fourth Edition by Andrew James McLean
Buy used from: $0.01
Another vital "nuts and bolts" real estate book.
The Intelligent Investor: The Definitive Book on Value Investing. A Book of Practical Counsel (Revised Edition)The Intelligent Investor: The Definitive Book on Value Investing. A Book of Practical Counsel (Revised Edition) by Benjamin Graham
Buy new: $13.57 / Used from: $9.99
Warren Buffett claims 85% of his stock picking was learned from this man. Who am I to exclude him?
Common Stocks and Uncommon Profits and Other Writings (Wiley Investment Classics)Common Stocks and Uncommon Profits and Other Writings (Wiley Investment Classics) by Philip A. Fisher
Buy new: $13.57 / Used from: $13.06
Fisher is the other 15% of Buffett's stock picking methodology.
The Futures Game: Who Wins, Who Loses, & WhyThe Futures Game: Who Wins, Who Loses, & Why by Richard J. Teweles
Buy new: $39.60 / Used from: $19.95
The "Bible" of futures trading. A great reference.
What Works on Wall StreetWhat Works on Wall Street by James P. O'Shaughnessy
Buy new: $24.39 / Used from: $8.26
A quick read on the factors that matter most in long-term stock performance. Thorough research throughout.
Stocks for the Long Run : The Definitive Guide to Financial Market Returns and Long-Term Investment StrategiesStocks for the Long Run : The Definitive Guide to Financial Market Returns and Long-Term Investment Strategies by Jeremy J. Siegel
Buy new: $29.95 / Used from: $4.13
Critical read for non-believers in the stock market. Hard to resist his statistical arguments.
The Future for Investors: Why the Tried and the True Triumph Over the Bold and the NewThe Future for Investors: Why the Tried and the True Triumph Over the Bold and the New by Jeremy J. Siegel
Buy new: $18.15 / Used from: $3.50
A more current view of the state of the stock market, with some worthwhile insights on how to plan your future portfolio allocations.
The Millionaire Next DoorThe Millionaire Next Door by Thomas J. Stanley
Buy new: $10.20 / Used from: $1.92
An important complement to Rich Dad that gives the reader a real sense about true sources (and habits) of wealth.
Incorporate & Grow Rich!Incorporate & Grow Rich! by Cheri S. Hill
Buy new: $19.77 / Used from: $17.00
A "Rich Dad" recommendation, and a decent primer for the advantages of corporate structures. However, the material is dated. Check with tax professionals on the points discussed before acting on them
The 16% Solution: How To Get High Interest Rates in a Low Interest World with Tax Lien CertificatesThe 16% Solution: How To Get High Interest Rates in a Low Interest World with Tax Lien Certificates by Joel S. Moskowitz
Buy new: $17.81 / Used from: $10.95
A reluctant add...the secret is out on tax liens, and they are less attractive now than this book represents. The education on how they work is worthwhile.
Contrarian Investment Strategies in the Next GenerationContrarian Investment Strategies in the Next Generation by David Dreman
Buy new: $18.48 / Used from: $1.17
I like this as a scathing response to those who believe in "Random Walk" theory (the belief that stock performance is random, so don't try and outperform the market  indexes.)
Conquer the Crash: You Can Survive and Prosper in a Deflationary Depression, Expanded and Updated EditionConquer the Crash: You Can Survive and Prosper in a Deflationary Depression, Expanded and Updated Edition by Robert R. Prechter
Buy new: $19.77 / Used from: $18.71
For those who believe in preparing for any contingency. I am not this paranoid, but this is a good toolbox for how to invest in the worst of possible markets to come.
The Five Rules for Successful Stock Investing: Morningstar's Guide to Building Wealth and Winning in the MarketThe Five Rules for Successful Stock Investing: Morningstar's Guide to Building Wealth and Winning in the Market by Pat Dorsey
Buy new: $11.53 / Used from: $8.90
A modern book to help lay people understand what measures are important in sizing up stock sectors, industries and specific companies.
Analysis for Financial Management + Standard & Poor's Educational Version of Market InsightAnalysis for Financial Management + Standard & Poor's Educational Version of Market Insight by Robert C. Higgins
Buy used from: $7.07
A great, short text on the fundamentals of finance that can only help investors evaluate potential investments.
If It's Raining in Brazil, Buy StarbucksIf It's Raining in Brazil, Buy Starbucks by Peter Navarro
Buy new: $11.53 / Used from: $3.41
Good perspective on how global events impact your domestic investments.
The LEAPS Strategist: 108 Proven Strategies for Increasing Investment & Trading ProfitsThe LEAPS Strategist: 108 Proven Strategies for Increasing Investment & Trading Profits by Michael C. Thomsett
Buy new: $23.07 / Used from: $14.43
A worthwhile collection of strategies for using LEAP options and their uses in a portfolio.