Book of Yoal 
The text of the Biblical chapters in Hebrew and English.
http://www.hareidi.org/bible/Joel.htmJewish Encyclopedia: Joel
Overview of the prophet from the traditional Jewish perspective.
http://www.jewishencyclopedia.com/view.jsp?artid=340&letter=J
Catholic Encyclopedia: Joel
Commentary on the Biblical prophet from the traditional Catholic perspective.
http://www.newadvent.org/cathen/08419a.htm
Joel
Profile of the prophet from a joint Lutheran and Catholic bible study project.
http://www.aboutbibleprophecy.com/p29.htm
Prophecies of Joel
Two of the prophet's predictions, with biblical links and discussion about their fulfillment from a Christian perspective.
http://www.aboutbibleprophecy.com/joel.htm
The Minor Prophets: Joel
Historical and spiritual overview of the Biblical prophet.
http://www.zianet.com/maxey/Proph6.htm
