As a relative newcomer, I am seeking advice from the seasoned investors on how you determine your option trading opportunities. 1. what screening criteria to you use to determine the underlying stock or index that may be a candidate for your trade? 2. what constitutes a "significant" price movement? Is it a percentage of the stock's price, a function of its standard deviation, or what? 3. what software or tools would you recommend? Any particular investment books you couldn't live without? Thanks for your time spent replying to my post. May your trades be successful.