There are many resources for caving information on the Internet. A few select ones are listed below.
National Speleological Society
Lead organization on caving in the United States
West Virginia Cave Conservancy
Buys and Protects caves in West Virginia
Another local grotto of the NSS, based out of Fairmont, WV
Potomac Speleological Club
Washington DC based grotto which does work in southern WV
VPI Cave Club
Virginia Tech's student grotto, based out of Blacksburg, VA
Penn State's student grotto, based out of Centre County, PA
Madison University Student Grotto
James Madison University's student grotto, based out of Harrisonburg, VA
The Virginia Region of the NSS
Eastern Region of the National Cave Rescue Commission
Regional Cave Rescue Training Organization
Outdoor gear shop located on Pleasant St., downtown Morgantown, WV. Stocks caving gear and gives a discount to WVUSG members.
Outdoor gear shop located on High St., downtown Morgantown, WV. Gives a discount to WVUSG members.
Mail-order caving equipment vendor located in WV, shipments usually arrive in Morgantown next business day.
On Rope 1
Mail-order caving equipment vendor specializing in vertical gear.
Brian Masney's flickr site
Featuring lots of amazing cave photography (see also his personal favorites)
Northern WV Speleo-Log
Local area caving blog
Cave diggers - the end is their beginning