There are many great sources of information on the web to help you learn about Ceramics.   The following links contain information of general interest to the ceramic artist. 

Ceramics Today   A great portal of ceramic information (used to be the ceramic section of About.com)  Many great links, content, and a newsletter you can sign up for. http://www.ceramicstoday.com/ 

Ceramics Web (includes ClayArt listserv user group instructions) http://art.sdsu.edu/ceramicsweb/

ClayArt Archives http://www.potters.org/categories.htm

USCS Guide to Pottery Resources on the Web http://libweb.ucsc.edu/pottery/

Andy Clift’s Claystation http://www.claystation.com/

San Francisco Bay Area Ceramics Resources http://www.claymedia.com/sfbay/internet.html

CeramicsSulpture.com showcases ceramic artists 

Glazes; recipes and software for evaluating them http://www.digitalfire.com/

Virtual Ceramics Exhibit http://www.uky.edu/Artsource/vce/VCEhome.html

Clay Worker's Web Ring, follow it to many interesting sites http://www.flash.net/%7Egemoore/cring.htm

Critical Ceramics http://www.criticalceramics.org/

Ceramics Monthly http://www.interrel.com/Ceramics/ceramics.htm

National Council on Education for the Ceramic Arts (NCECA)
http://nceca.net

Buy Art from 150 leading contemporary British Artists in the UK  www.scotlandart.com