1) The Intelligent Investor
This is perhaps the most important and influential book ever written about value investing. Originally published in 1934 by Ben Graham, this work has been heralded by such notable investors as Warren Buffett as "the best investing book ever written". In it, Graham presents two types of investing styles - one for every day people who don't want to think about their portfolios ("defensive") and the business man or woman who wants to enjoy maximum returns ("enterprising").