Short Strangle ( non-directional )

http://www.optionsplaybook.com/option-strategies/short-strangle/

Ratio Vertical Spread (front spread)

http://www.optionsplaybook.com/option-strategies/call-ratio-vertical-spread/

Iron Condor

http://www.optionsplaybook.com/option-strategies/iron-condor/

Volatility and the Greeks

http://www.optionseducation.org/advanced/volatility_greeks.jsp

10 Reasons to Trade Options

http://www.thestreet.com/story/10923708/10-reasons-to-trade-options-right-now.html