Alan Ellman's site on options strategies, includes a lot of material on covered call strategies and cash secured puts (amongst others). Twitter: @BluCollarInvest
Chris Butler's options information and learning site. Includes information on the basics of options trading, the greeks and some common strategies. Twitter: @ProjectOption
Educational organisation founded by Nassim Taleb, which intends to "build the principles and methodology for real-world rigor in decision making and codify a clear-cut way to approach risk" (taken from their website). The certification offered covers a wider range of subjects than just financial options and encompasses the wider risk subject, in general. Twitter: @nntaleb
This site holds Daniel Neagoy's option trading blog and is also the launching point for a number of his options strategies, including the Core Income Butterfly as well as trend following using options on ETFs amongst others. There is a mix of free and paid-for content, all of which is well written and honest about the risks as well as rewards of options trading. Twitter: @ThetaTrend
