A random walk down Wallstreet
Options and volatility pricing, by Natenberg
Why stock markets crash, by Didier sornette
Manias, panics and Crashes by Aliber and Kindleberger
Debt: the first 5000 years
Yet to see a better, more accurate or more succinct treatment than "A Random Walk Down Wall St" by Malkiel. Can't recommend it enough. Readable. Required knowledge.
A random walk down Wallstreet
Options and volatility pricing, by Natenberg
Why stock markets crash, by Didier sornette
Manias, panics and Crashes by Aliber and Kindleberger
Debt: the first 5000 years