I highly recommend the following books as they helped me acquire a solid foundation for learning how to invest successfully.
One Up On Wall Street: How To Use What You Already Know To Make Money In The Market
The Five Rules for Successful Stock Investing: Morningstar's Guide to Building Wealth and Winning in the Market
The Intelligent Investor: The Definitive Book on Value Investing
The New Buffettology: How Warren Buffett Got and Stayed Rich in Markets Like This and How You Can Too!
Secrets Of The Millionaire Mind
Common Stocks and Uncommon Profits and Other Writings
Warren Buffett Wealth: Principles and Practical Methods Used by the World's Greatest Investor
Essays of Warren Buffett: Lessons for Investors and Managers