A few helpful resources:

Petroleum Glossary

Difference Between WTI and Brent

Oil Prices

Bloomberg Energy

U.S. EIA

London Stock Exchange Brent

NASDAQ Crude Oil Brent

Live Charts Brent

YCharts Brent Crude Oil

Trading Economics Brent Crude Oil

NYMEX WTI Futures

Platts

Key Facts Energy

World Oil

Oil & Gas Journal

Focus Economics