Reminiscences of a Stock Operator -- a great book for hands-on traders and speculators. Lots of axioms and market psychology going back to the 1930's. A classic.
The Stock Trader's Almanac -- if you want to understand the patterns and cycles of the stock market, look no further. Youll find them here. Investors who want to find an edge will find it here.
Ahead of the Curve -- and in-depth market forecasting book. One of my top 5 market books but it does require some study to get it.
The Right Stock at the Right Time -- This is one of Larry Williams' all-time classics that helped me truly understand the stock market. A must-read for investors.