Probably the best networking site for witches on the web in my opinion anyway is Witchvox. Witches, Pagans, covens and groups are listed worldwide. This is a great starting point for getting to know like minded souls. A witches social meeting (often at the pub…) is called a “moot.” Witchvox will provde you with info for local moots in your area.
There are other quality internet sites out there as well (see my links page the Web and Beyond) - why not join a few and get to know some of the communities to see which one would be right for you?
Image http://www.sxc.hu/browse.phtml?f=view&id=908180 (ciscopa)