Listed below are a number of sources that will give you more information about grazing:

Larry Tranel's Dairy Publications - excellent information for profitable dairy grazing

University of Wisconsin Pastures and Grazing Website - lots of information on pastures and grazing from the University of Wisconsin

School for Beginning Dairy and Livestock Farmers

Graze Magazine - the magazine by graziers for graziers 

Grazing Wedge Explanation and Use

More on the Grazing Wedge from the University of Missouri

UCanFarm - the website for beginning dairy farmers.  Developed by farmers, agribusiness, Extension and Marathon County Chamber of Commerce

Eatwild - fully describes the benefits of grassfed meat and dairy products

Bud Williams Marketing Schools - if you really want to make a profit in the beef business, plus maintain a regular cash flow, this school can show you how

Ranching for Profit - high level consulting for livestock producers interested in profitability