Oil and Gas. What you need to know.

Oil And Gas Industry Primer
http://www.investopedia.com/articles/07/oil_gas.asp

The Industry Handbook: Overview
http://www.investopedia.com/features/industryhandbook/

What economic indicators are especially important to oil traders?
http://www.investopedia.com/ask/answers/06/oilpriceseconomicindicators.asp

Getting A Grip On The Cost Of Gas
http://www.investopedia.com/articles/pf/05/gascrisisplan.asp

Fueling Futures In The Energy Market
http://www.investopedia.com/articles/optioninvestor/07/energy_market.asp