Useful links

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Trading a stock vs trading an option:
http://www.investopedia.com/article...r/03/073003.asp
http://www.investopedia.com/article...r/03/080603.asp
http://www.investopedia.com/university/options/

Strategies:
http://www.cboe.com/Strategies/DefaultEquity.aspx Go through the "buying calls" and "buying puts" examples, very educational.

Options Tutorials:
http://www.cboe.com/LearnCenter/Tutorials.aspx

Options analysis tools:
http://www.ivolatility.com/

Option value calc:
http://www.ivolatility.com/calc/

Example options chain:
http://finance.yahoo.com/q/op?s=MSFT

Optins Dictionary:
http://www.cboe.com/LearnCenter/Glossary.aspx

Calculus behind the value of a derivative of an equity:
http://home.rochester.rr.com/jbxroads/options/

A wealth of information