http://thegoalieguild.com/ and
http://www.goaliecrease.net/ are both good, goalielife is good as Scott Battram who owns the site makes equipment, Goaliecrease.net just got Mind The Crease which has alot of tips
If you don't mind buying a book I"d recomend this one.
http://www.chapters.indigo.ca/books/...ng&ikwsec=Home
I bought it myself and have found it very informative, and has helped me tighter up certain parts of my game as well