As a relative newcomer, I am seeking ADVICE from you more seasoned investors on how you determine your option trading opportunities. 1. what screening criteria do you use to determine the underlying stock or ETF that may be a candidate for your trade? 2. what constitutes a "significant" price movement? Is it a percentage change in the underlying, a function of its standard deviation or ......? 3. recommended software or tools you employ? Or, any investing books you cannot live without. Thanks for your time spent responding to my post. May all you trades be successful.