Your Company
www.sbaonline.sba.gov-SBA homepage that links pretty much all activities of the SBA.
http://www.scos.gov/ -SC Secretary of State's webpage.
www.nolo.com/encyclopedia/articles/sb
A legal website with good information regarding forms of business.
http://www.uspto.gov/-U.S. Patent and Trademark official site.
http://www.myscgov.com/ - Follow the "Business" link.
http://www.wtca.org/  - Trade promotion resources worldwide. 
http://www.sbaonline.sba.gov/sbdc/ - Small Business Development Center

Local Resources
Berkeley, Charleston, Dorchester Council of Governments (COG)

Charleston Citywide Local Development Center (LDC) - SBA Microloan Program, Gap Financing
Small Business Incentive Loan Program
Contact: Sharon Brennan
75 Calhoun Street, 3rd Floor, Charleston, SC 29401
Phone: (843) 884-8225
Fax: (803) 724-7354 

Charleston County Public Library
Charleston Metro Chamber of Commerce
Charleston Regional Business Journal
Greater Summerville/Dorchester Chamber of Commerce
Laurinburg Electronic Commerce Resource Center
Service Corp of Retired Executives (SCORE)
Small Business Resource Center

Your Industry
sbdcnet.utsa.edu  Website for the Small Business Development Center – National Information Clearinghouse.
www.virtualpet.com/industry/howto/search.htm - How to learn about an industry.
http://www.marketingsource.com/associations/ - Follow "Business & Economy" to find information on your industry or search for an association.
http://www.internetstats.com/ - Statistics on over 75 industries.
http://www.fuld.com/i3/123- Links to over 600 intelligence-related sites
www.thestandaard.com/research - Internet economy research site.
www.nypl.org/research/sibl/company/c2index - Information about larger companies.
http://www.magportal.com/ - Magazine articles on the web.

Electronic Journals
http://www.entrepreneur.com/
http://www.americandemographics.com/
http://www.inc.com/

Your Market
www.infods.com/freedata - Free or low-cost information covering demographics, retail potential, and more. Information by zip code also.
http://www.google.com/ 
Statistics:
Tier2.census.gov/usac/index.html-ssi
factfinder.census.gov/servlet/BasicfactsServle
www.sciway.net/statistics/economic

Databases
Lexis-Nexis Academic Universe